55515133511412 has 48 divisors (see below), whose sum is σ = 129604063841280. Its totient is φ = 18495224225632.

The previous prime is 55515133511407. The next prime is 55515133511413. The reversal of 55515133511412 is 21411533151555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55515133511413) 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, 324703093 + ... + 324874019.

It is an arithmetic number, because the mean of its divisors is an integer number (2700084663360).

Almost surely, 2^{55515133511412} is an apocalyptic number.

It is an amenable number.

55515133511412 is an abundant number, since it is smaller than the sum of its proper divisors (74088930329868).

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

55515133511412 is a wasteful number, since it uses less digits than its factorization.

55515133511412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185140 (or 185138 counting only the distinct ones).

The product of its digits is 225000, while the sum is 42.

Adding to 55515133511412 its reverse (21411533151555), we get a palindrome (76926666662967).

The spelling of 55515133511412 in words is "fifty-five trillion, five hundred fifteen billion, one hundred thirty-three million, five hundred eleven thousand, four hundred twelve".