55551415512 has 64 divisors (see below), whose sum is σ = 143705232000. Its totient is φ = 17883258624.

The previous prime is 55551415499. The next prime is 55551415531. The reversal of 55551415512 is 21551415555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210562 + ... + 394257.

It is an arithmetic number, because the mean of its divisors is an integer number (2245394250).

Almost surely, 2^55551415512 is an apocalyptic number.

It is an amenable number.

55551415512 is an abundant number, since it is smaller than the sum of its proper divisors (88153816488).

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

55551415512 is a wasteful number, since it uses less digits than its factorization.

55551415512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604960 (or 604956 counting only the distinct ones).

The product of its digits is 125000, while the sum is 39.

The spelling of 55551415512 in words is "fifty-five billion, five hundred fifty-one million, four hundred fifteen thousand, five hundred twelve".