551688925536 has 144 divisors (see below), whose sum is σ = 1871801855280. Its totient is φ = 157625395200.

The previous prime is 551688925523. The next prime is 551688925589. The reversal of 551688925536 is 635529886155.

551688925536 is a `hidden beast` number, since 5 + 5 + 1 + 6 + 8 + 8 + 92 + 5 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6473265 + ... + 6557936.

It is an arithmetic number, because the mean of its divisors is an integer number (12998623995).

Almost surely, 2^551688925536 is an apocalyptic number.

551688925536 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

551688925536 is an abundant number, since it is smaller than the sum of its proper divisors (1320112929744).

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

551688925536 is a wasteful number, since it uses less digits than its factorization.

551688925536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031234 (or 13031213 counting only the distinct ones).

The product of its digits is 77760000, while the sum is 63.

The spelling of 551688925536 in words is "five hundred fifty-one billion, six hundred eighty-eight million, nine hundred twenty-five thousand, five hundred thirty-six".