15623357655 has 16 divisors (see below), whose sum is σ = 25529232384. Its totient is φ = 8155170720.

The previous prime is 15623357653. The next prime is 15623357669. The reversal of 15623357655 is 55675332651.

It is not a de Polignac number, because 15623357655 - 2¹ = 15623357653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15623357653) 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, 11079691 + ... + 11081100.

It is an arithmetic number, because the mean of its divisors is an integer number (1595577024).

Almost surely, 2^15623357655 is an apocalyptic number.

15623357655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15623357655 is a deficient number, since it is larger than the sum of its proper divisors (9905874729).

15623357655 is a wasteful number, since it uses less digits than its factorization.

15623357655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22160846.

The product of its digits is 2835000, while the sum is 48.

The spelling of 15623357655 in words is "fifteen billion, six hundred twenty-three million, three hundred fifty-seven thousand, six hundred fifty-five".