57661545431007 has 20 divisors (see below), whose sum is σ = 98441580207696. Its totient is φ = 32949454531680.

The previous prime is 57661545430991. The next prime is 57661545431033. The reversal of 57661545431007 is 70013454516675.

57661545431007 is a `hidden beast` number, since 5 + 7 + 6 + 61 + 545 + 4 + 31 + 0 + 0 + 7 = 666.

It is not a de Polignac number, because 57661545431007 - 2⁴ = 57661545430991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57661545431057) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50847923094 + ... + 50847924227.

Almost surely, 2^{57661545431007} is an apocalyptic number.

57661545431007 is a deficient number, since it is larger than the sum of its proper divisors (40780034776689).

57661545431007 is a wasteful number, since it uses less digits than its factorization.

57661545431007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101695847340 (or 101695847331 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 54.

The spelling of 57661545431007 in words is "fifty-seven trillion, six hundred sixty-one billion, five hundred forty-five million, four hundred thirty-one thousand, seven".