551523660533742 has 64 divisors (see below), whose sum is σ = 1188495964131840. Its totient is φ = 169614043632000.

The previous prime is 551523660533701. The next prime is 551523660533749. The reversal of 551523660533742 is 247335066325155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551523660533749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8796058992 + ... + 8796121692.

It is an arithmetic number, because the mean of its divisors is an integer number (18570249439560).

Almost surely, 2^{551523660533742} is an apocalyptic number.

551523660533742 is an abundant number, since it is smaller than the sum of its proper divisors (636972303598098).

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

551523660533742 is a wasteful number, since it uses less digits than its factorization.

551523660533742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117769.

The product of its (nonzero) digits is 68040000, while the sum is 57.

The spelling of 551523660533742 in words is "five hundred fifty-one trillion, five hundred twenty-three billion, six hundred sixty million, five hundred thirty-three thousand, seven hundred forty-two".