55755766731 has 16 divisors (see below), whose sum is σ = 84964914944. Its totient is φ = 31859033184.

The previous prime is 55755766727. The next prime is 55755766757. The reversal of 55755766731 is 13766755755.

It is a happy number.

It is not a de Polignac number, because 55755766731 - 2² = 55755766727 is a prime.

It is a super-2 number, since 2×55755766731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55755766631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602736 + ... + 689058.

It is an arithmetic number, because the mean of its divisors is an integer number (5310307184).

Almost surely, 2^55755766731 is an apocalyptic number.

55755766731 is a deficient number, since it is larger than the sum of its proper divisors (29209148213).

55755766731 is a wasteful number, since it uses less digits than its factorization.

55755766731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117090.

The product of its digits is 23152500, while the sum is 57.

The spelling of 55755766731 in words is "fifty-five billion, seven hundred fifty-five million, seven hundred sixty-six thousand, seven hundred thirty-one".