55511045123120 has 20 divisors (see below), whose sum is σ = 129063179911440. Its totient is φ = 22204418049216.

The previous prime is 55511045123099. The next prime is 55511045123147. The reversal of 55511045123120 is 2132154011555.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×55511045123120² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346944031940 + ... + 346944032099.

It is an arithmetic number, because the mean of its divisors is an integer number (6453158995572).

Almost surely, 2^{55511045123120} is an apocalyptic number.

It is an amenable number.

55511045123120 is an abundant number, since it is smaller than the sum of its proper divisors (73552134788320).

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

55511045123120 is a wasteful number, since it uses less digits than its factorization.

55511045123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693888064052 (or 693888064046 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

Adding to 55511045123120 its reverse (2132154011555), we get a palindrome (57643199134675).

The spelling of 55511045123120 in words is "fifty-five trillion, five hundred eleven billion, forty-five million, one hundred twenty-three thousand, one hundred twenty".