57561511734 has 32 divisors (see below), whose sum is σ = 127945872000. Its totient is φ = 19182460392.

The previous prime is 57561511691. The next prime is 57561511741. The reversal of 57561511734 is 43711516575.

57561511734 is a `hidden beast` number, since 5 + 7 + 5 + 61 + 511 + 73 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 57561511734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94737 + ... + 352275.

It is an arithmetic number, because the mean of its divisors is an integer number (3998308500).

Almost surely, 2^57561511734 is an apocalyptic number.

57561511734 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

57561511734 is an abundant number, since it is smaller than the sum of its proper divisors (70384360266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57561511734 is a wasteful number, since it uses less digits than its factorization.

57561511734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261689 (or 261683 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The spelling of 57561511734 in words is "fifty-seven billion, five hundred sixty-one million, five hundred eleven thousand, seven hundred thirty-four".