15664411623 has 16 divisors (see below), whose sum is σ = 25125873920. Its totient is φ = 8479982016.

The previous prime is 15664411621. The next prime is 15664411639. The reversal of 15664411623 is 32611446651.

It is not a de Polignac number, because 15664411623 - 2¹ = 15664411621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15664411621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19629190 + ... + 19629987.

It is an arithmetic number, because the mean of its divisors is an integer number (1570367120).

Almost surely, 2^15664411623 is an apocalyptic number.

15664411623 is a deficient number, since it is larger than the sum of its proper divisors (9461462297).

15664411623 is a wasteful number, since it uses less digits than its factorization.

15664411623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39259206.

The product of its digits is 103680, while the sum is 39.

The spelling of 15664411623 in words is "fifteen billion, six hundred sixty-four million, four hundred eleven thousand, six hundred twenty-three".