53618992551 has 30 divisors (see below), whose sum is σ = 82699194336. Its totient is φ = 34585412400.

The previous prime is 53618992523. The next prime is 53618992571. The reversal of 53618992551 is 15529981635.

53618992551 is a `hidden beast` number, since 5 + 3 + 6 + 1 + 89 + 9 + 2 + 551 = 666.

It is not a de Polignac number, because 53618992551 - 2⁶ = 53618992487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53618992571) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 11601021 + ... + 11605641.

Almost surely, 2^53618992551 is an apocalyptic number.

53618992551 is a deficient number, since it is larger than the sum of its proper divisors (29080201785).

53618992551 is an frugal number, since it uses more digits than its factorization.

53618992551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9285 (or 4655 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

It can be divided in two parts, 5361899 and 2551, that added together give a triangular number (5364450 = T₃₂₇₅).

The spelling of 53618992551 in words is "fifty-three billion, six hundred eighteen million, nine hundred ninety-two thousand, five hundred fifty-one".