551617625115 has 144 divisors (see below), whose sum is σ = 1114026994080. Its totient is φ = 250908641280.

The previous prime is 551617625071. The next prime is 551617625123. The reversal of 551617625115 is 511526716155.

551617625115 is a `hidden beast` number, since 5 + 5 + 1 + 6 + 1 + 7 + 625 + 1 + 15 = 666.

It is not a de Polignac number, because 551617625115 - 2¹⁰ = 551617624091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7653145 + ... + 7724885.

It is an arithmetic number, because the mean of its divisors is an integer number (7736298570).

Almost surely, 2^551617625115 is an apocalyptic number.

551617625115 is an abundant number, since it is smaller than the sum of its proper divisors (562409368965).

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

551617625115 is a wasteful number, since it uses less digits than its factorization.

551617625115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71834 (or 71808 counting only the distinct ones).

The product of its digits is 315000, while the sum is 45.

The spelling of 551617625115 in words is "five hundred fifty-one billion, six hundred seventeen million, six hundred twenty-five thousand, one hundred fifteen".