551554244064 has 72 divisors (see below), whose sum is σ = 1579009231800. Its totient is φ = 182617498368.

The previous prime is 551554244051. The next prime is 551554244089. The reversal of 551554244064 is 460442455155.

551554244064 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 542 + 4 + 40 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6383662 + ... + 6469485.

It is an arithmetic number, because the mean of its divisors is an integer number (21930683775).

Almost surely, 2^551554244064 is an apocalyptic number.

It is an amenable number.

551554244064 is an abundant number, since it is smaller than the sum of its proper divisors (1027454987736).

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

551554244064 is a wasteful number, since it uses less digits than its factorization.

551554244064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12853312 (or 12853301 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 551554244064 in words is "five hundred fifty-one billion, five hundred fifty-four million, two hundred forty-four thousand, sixty-four".