13402555551 has 24 divisors (see below), whose sum is σ = 24136205184. Its totient is φ = 6962366160.

The previous prime is 13402555541. The next prime is 13402555567. The reversal of 13402555551 is 15555520431.

13402555551 is a `hidden beast` number, since 1 + 34 + 0 + 25 + 55 + 551 = 666.

It is not a de Polignac number, because 13402555551 - 2¹⁰ = 13402554527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402555501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9669261 + ... + 9670646.

It is an arithmetic number, because the mean of its divisors is an integer number (1005675216).

Almost surely, 2^13402555551 is an apocalyptic number.

13402555551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13402555551 is a deficient number, since it is larger than the sum of its proper divisors (10733649633).

13402555551 is a wasteful number, since it uses less digits than its factorization.

13402555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19339931 (or 19339928 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 13402555551 in words is "thirteen billion, four hundred two million, five hundred fifty-five thousand, five hundred fifty-one".