551907657882 has 256 divisors, whose sum is σ = 1542652231680. Its totient is φ = 142656132096.

The previous prime is 551907657859. The next prime is 551907657907. The reversal of 551907657882 is 288756709155.

551907657882 is a `hidden beast` number, since 5 + 51 + 9 + 0 + 7 + 6 + 578 + 8 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19720263 + ... + 19748229.

It is an arithmetic number, because the mean of its divisors is an integer number (6025985280).

Almost surely, 2^551907657882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551907657882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771326115840).

551907657882 is an abundant number, since it is smaller than the sum of its proper divisors (990744573798).

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

551907657882 is a wasteful number, since it uses less digits than its factorization.

551907657882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28122 (or 28116 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 63.

The spelling of 551907657882 in words is "five hundred fifty-one billion, nine hundred seven million, six hundred fifty-seven thousand, eight hundred eighty-two".