13621055654 has 32 divisors (see below), whose sum is σ = 21867148800. Its totient is φ = 6344676000.

The previous prime is 13621055647. The next prime is 13621055659. The reversal of 13621055654 is 45655012631.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621055659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744464 + ... + 762540.

It is an arithmetic number, because the mean of its divisors is an integer number (683348400).

Almost surely, 2^13621055654 is an apocalyptic number.

13621055654 is a deficient number, since it is larger than the sum of its proper divisors (8246093146).

13621055654 is a wasteful number, since it uses less digits than its factorization.

13621055654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18428.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 13621055654 in words is "thirteen billion, six hundred twenty-one million, fifty-five thousand, six hundred fifty-four".