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75707001457 = 233291608759
BaseRepresentation
bin100011010000001111…
…1010010101001110001
321020102011002011002221
41012200133102221301
52220021443021312
654440155441041
75320042615603
oct1064037225161
9236364064087
1075707001457
112a11a6a07aa
121280a156181
1371a68c73a9
143942955173
151e8166e207
hex11a07d2a71

75707001457 has 4 divisors (see below), whose sum is σ = 78998610240. Its totient is φ = 72415392676.

The previous prime is 75707001443. The next prime is 75707001473. The reversal of 75707001457 is 75410070757.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75410070757 = 710772867251.

It is a cyclic number.

It is not a de Polignac number, because 75707001457 - 27 = 75707001329 is a prime.

It is a super-2 number, since 2×757070014572 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75707001157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645804357 + ... + 1645804402.

It is an arithmetic number, because the mean of its divisors is an integer number (19749652560).

Almost surely, 275707001457 is an apocalyptic number.

It is an amenable number.

75707001457 is a deficient number, since it is larger than the sum of its proper divisors (3291608783).

75707001457 is a wasteful number, since it uses less digits than its factorization.

75707001457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291608782.

The product of its (nonzero) digits is 240100, while the sum is 43.

The spelling of 75707001457 in words is "seventy-five billion, seven hundred seven million, one thousand, four hundred fifty-seven".

Divisors: 1 23 3291608759 75707001457