555961637376 has 960 divisors, whose sum is σ = 1853161390080. Its totient is φ = 159535595520.

The previous prime is 555961637293. The next prime is 555961637389. The reversal of 555961637376 is 673736169555.

555961637376 is a `hidden beast` number, since 5 + 5 + 5 + 9 + 616 + 3 + 7 + 3 + 7 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4377650625 + ... + 4377650751.

It is an arithmetic number, because the mean of its divisors is an integer number (1930376448).

Almost surely, 2^555961637376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555961637376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926580695040).

555961637376 is an abundant number, since it is smaller than the sum of its proper divisors (1297199752704).

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

555961637376 is a wasteful number, since it uses less digits than its factorization.

555961637376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 266 counting only the distinct ones).

The product of its digits is 107163000, while the sum is 63.

The spelling of 555961637376 in words is "five hundred fifty-five billion, nine hundred sixty-one million, six hundred thirty-seven thousand, three hundred seventy-six".