13621653554 has 8 divisors (see below), whose sum is σ = 20737442928. Its totient is φ = 6709172580.

The previous prime is 13621653509. The next prime is 13621653559. The reversal of 13621653554 is 45535612631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13621653559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50826932 + ... + 50827199.

It is an arithmetic number, because the mean of its divisors is an integer number (2592180366).

Almost surely, 2^13621653554 is an apocalyptic number.

13621653554 is a deficient number, since it is larger than the sum of its proper divisors (7115789374).

13621653554 is a wasteful number, since it uses less digits than its factorization.

13621653554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101654200.

The product of its digits is 324000, while the sum is 41.

The spelling of 13621653554 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, five hundred fifty-four".