551611031365560 has 64 divisors (see below), whose sum is σ = 1656878623552800. Its totient is φ = 146914450190336.

The previous prime is 551611031365553. The next prime is 551611031365571. The reversal of 551611031365560 is 65563130116155.

It is a happy number.

It is a super-2 number, since 2×551611031365560² (a number of 30 digits) contains 22 as substring.

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, 2840915649 + ... + 2841109808.

Almost surely, 2^{551611031365560} is an apocalyptic number.

It is an amenable number.

551611031365560 is an abundant number, since it is smaller than the sum of its proper divisors (1105267592187240).

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

551611031365560 is a wasteful number, since it uses less digits than its factorization.

551611031365560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682026280 (or 5682026276 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 48.

The spelling of 551611031365560 in words is "five hundred fifty-one trillion, six hundred eleven billion, thirty-one million, three hundred sixty-five thousand, five hundred sixty".