15552655623 has 12 divisors (see below), whose sum is σ = 22489140960. Its totient is φ = 10357270656.

The previous prime is 15552655607. The next prime is 15552655627. The reversal of 15552655623 is 32655625551.

15552655623 is a `hidden beast` number, since 1 + 5 + 55 + 26 + 556 + 23 = 666.

It is not a de Polignac number, because 15552655623 - 2⁴ = 15552655607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15552655627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921711 + ... + 938432.

It is an arithmetic number, because the mean of its divisors is an integer number (1874095080).

Almost surely, 2^15552655623 is an apocalyptic number.

15552655623 is a deficient number, since it is larger than the sum of its proper divisors (6936485337).

15552655623 is a wasteful number, since it uses less digits than its factorization.

15552655623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861078 (or 1861075 counting only the distinct ones).

The product of its digits is 1350000, while the sum is 45.

The spelling of 15552655623 in words is "fifteen billion, five hundred fifty-two million, six hundred fifty-five thousand, six hundred twenty-three".