55011109944 has 64 divisors (see below), whose sum is σ = 165446956800. Its totient is φ = 14890224384.

The previous prime is 55011109943. The next prime is 55011109991. The reversal of 55011109944 is 44990111055.

It is a super-4 number, since 4×55011109944⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55011109943) 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, 8613837 + ... + 8620220.

It is an arithmetic number, because the mean of its divisors is an integer number (2585108700).

Almost surely, 2^55011109944 is an apocalyptic number.

It is an amenable number.

55011109944 is an abundant number, since it is smaller than the sum of its proper divisors (110435846856).

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

55011109944 is a wasteful number, since it uses less digits than its factorization.

55011109944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17234092 (or 17234088 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 55011109944 in words is "fifty-five billion, eleven million, one hundred nine thousand, nine hundred forty-four".