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750068697557 = 3741494442121
BaseRepresentation
bin10101110101000111001…
…01000000100111010101
32122201001120120202200202
422322203211000213111
544242120041310212
61332324331150245
7105122254506464
oct12724345004725
92581046522622
10750068697557
1126a114253193
121014505a5385
13559675106ba
1428436bd89db
151479e9bc0c2
hexaea39409d5

750068697557 has 8 divisors (see below), whose sum is σ = 789129626712. Its totient is φ = 711996652800.

The previous prime is 750068697551. The next prime is 750068697583. The reversal of 750068697557 is 755796860057.

It can be written as a sum of positive squares in 4 ways, for example, as 28598530321 + 721470167236 = 169111^2 + 849394^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 750068697557 - 216 = 750068632021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 750068697493 and 750068697502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (750068697551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247219544 + ... + 247222577.

It is an arithmetic number, because the mean of its divisors is an integer number (98641203339).

Almost surely, 2750068697557 is an apocalyptic number.

It is an amenable number.

750068697557 is a deficient number, since it is larger than the sum of its proper divisors (39060929155).

750068697557 is a wasteful number, since it uses less digits than its factorization.

750068697557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494442199.

The product of its (nonzero) digits is 111132000, while the sum is 65.

The spelling of 750068697557 in words is "seven hundred fifty billion, sixty-eight million, six hundred ninety-seven thousand, five hundred fifty-seven".

Divisors: 1 37 41 1517 494442121 18294358477 20272126961 750068697557