551138838360 has 256 divisors, whose sum is σ = 1854430156800. Its totient is φ = 129861273600.

The previous prime is 551138838359. The next prime is 551138838379. The reversal of 551138838360 is 63838831155.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50739330 + ... + 50750190.

It is an arithmetic number, because the mean of its divisors is an integer number (7243867800).

Almost surely, 2^551138838360 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 551138838360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927215078400).

551138838360 is an abundant number, since it is smaller than the sum of its proper divisors (1303291318440).

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

551138838360 is a wasteful number, since it uses less digits than its factorization.

551138838360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11962 (or 11958 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 551138838360 in words is "five hundred fifty-one billion, one hundred thirty-eight million, eight hundred thirty-eight thousand, three hundred sixty".