553540431591 has 24 divisors (see below), whose sum is σ = 918372915200. Its totient is φ = 314719319376.

The previous prime is 553540431583. The next prime is 553540431643. The reversal of 553540431591 is 195134045355.

553540431591 is a `hidden beast` number, since 5 + 5 + 3 + 54 + 0 + 4 + 3 + 1 + 591 = 666.

It is not a de Polignac number, because 553540431591 - 2³ = 553540431583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553540431491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22063735 + ... + 22088808.

Almost surely, 2^553540431591 is an apocalyptic number.

553540431591 is a deficient number, since it is larger than the sum of its proper divisors (364832483609).

553540431591 is a wasteful number, since it uses less digits than its factorization.

553540431591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44152755 (or 44152752 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 553540431591 in words is "five hundred fifty-three billion, five hundred forty million, four hundred thirty-one thousand, five hundred ninety-one".