55997509629 has 16 divisors (see below), whose sum is σ = 75910819712. Its totient is φ = 36710972928.

The previous prime is 55997509619. The next prime is 55997509657. The reversal of 55997509629 is 92690579955.

It is not a de Polignac number, because 55997509629 - 2⁷ = 55997509501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55997509629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55997509619) 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, 305569 + ... + 453174.

It is an arithmetic number, because the mean of its divisors is an integer number (4744426232).

Almost surely, 2^55997509629 is an apocalyptic number.

It is an amenable number.

55997509629 is a deficient number, since it is larger than the sum of its proper divisors (19913310083).

55997509629 is a wasteful number, since it uses less digits than its factorization.

55997509629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759156.

The product of its (nonzero) digits is 68890500, while the sum is 66.

The spelling of 55997509629 in words is "fifty-five billion, nine hundred ninety-seven million, five hundred nine thousand, six hundred twenty-nine".