55011661512 has 32 divisors (see below), whose sum is σ = 138025665600. Its totient is φ = 18271018944.

The previous prime is 55011661477. The next prime is 55011661541. The reversal of 55011661512 is 21516611055.

It is a super-2 number, since 2×55011661512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4130812 + ... + 4144107.

It is an arithmetic number, because the mean of its divisors is an integer number (4313302050).

Almost surely, 2^55011661512 is an apocalyptic number.

It is an amenable number.

55011661512 is an abundant number, since it is smaller than the sum of its proper divisors (83014004088).

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

55011661512 is a wasteful number, since it uses less digits than its factorization.

55011661512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275205 (or 8275201 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 33.

The spelling of 55011661512 in words is "fifty-five billion, eleven million, six hundred sixty-one thousand, five hundred twelve".