55135515020 has 12 divisors (see below), whose sum is σ = 115784581584. Its totient is φ = 22054206000.

The previous prime is 55135515007. The next prime is 55135515073. The reversal of 55135515020 is 2051553155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378387856 + ... + 1378387895.

It is an arithmetic number, because the mean of its divisors is an integer number (9648715132).

Almost surely, 2^55135515020 is an apocalyptic number.

It is an amenable number.

55135515020 is an abundant number, since it is smaller than the sum of its proper divisors (60649066564).

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

55135515020 is a wasteful number, since it uses less digits than its factorization.

55135515020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756775760 (or 2756775758 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 55135515020 in words is "fifty-five billion, one hundred thirty-five million, five hundred fifteen thousand, twenty".