55542997917 has 32 divisors (see below), whose sum is σ = 90902784000. Its totient is φ = 33236302320.

The previous prime is 55542997897. The next prime is 55542997931. The reversal of 55542997917 is 71979924555.

55542997917 is a `hidden beast` number, since 5 + 5 + 542 + 9 + 9 + 79 + 17 = 666.

It is not a de Polignac number, because 55542997917 - 2⁸ = 55542997661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55542997957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1160167 + ... + 1207092.

It is an arithmetic number, because the mean of its divisors is an integer number (2840712000).

Almost surely, 2^55542997917 is an apocalyptic number.

It is an amenable number.

55542997917 is a deficient number, since it is larger than the sum of its proper divisors (35359786083).

55542997917 is a wasteful number, since it uses less digits than its factorization.

55542997917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367358 (or 2367352 counting only the distinct ones).

The product of its digits is 35721000, while the sum is 63.

The spelling of 55542997917 in words is "fifty-five billion, five hundred forty-two million, nine hundred ninety-seven thousand, nine hundred seventeen".