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57609953387 = 78229993341
BaseRepresentation
bin110101101001110100…
…100010000001101011
312111200221021212011022
4311221310202001223
51420441122002022
642244325123055
74106425344530
oct655164420153
9174627255138
1057609953387
1122483353728
12b1b955948b
135581547b1c
142b072a4d87
1517729e5c42
hexd69d2206b

57609953387 has 4 divisors (see below), whose sum is σ = 65839946736. Its totient is φ = 49379960040.

The previous prime is 57609953341. The next prime is 57609953389. The reversal of 57609953387 is 78335990675.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57609953387 - 210 = 57609952363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57609953389) 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, 4114996664 + ... + 4114996677.

It is an arithmetic number, because the mean of its divisors is an integer number (16459986684).

Almost surely, 257609953387 is an apocalyptic number.

57609953387 is a deficient number, since it is larger than the sum of its proper divisors (8229993349).

57609953387 is an equidigital number, since it uses as much as digits as its factorization.

57609953387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8229993348.

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 57609953387 in words is "fifty-seven billion, six hundred nine million, nine hundred fifty-three thousand, three hundred eighty-seven".

Divisors: 1 7 8229993341 57609953387