13571664623 has 16 divisors (see below), whose sum is σ = 15332308992. Its totient is φ = 11901396000.

The previous prime is 13571664607. The next prime is 13571664629. The reversal of 13571664623 is 32646617531.

It is not a de Polignac number, because 13571664623 - 2⁴ = 13571664607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13571664629) 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, 42065 + ... + 170037.

It is an arithmetic number, because the mean of its divisors is an integer number (958269312).

Almost surely, 2^13571664623 is an apocalyptic number.

13571664623 is a deficient number, since it is larger than the sum of its proper divisors (1760644369).

13571664623 is a wasteful number, since it uses less digits than its factorization.

13571664623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128326.

The product of its digits is 544320, while the sum is 44.

The spelling of 13571664623 in words is "thirteen billion, five hundred seventy-one million, six hundred sixty-four thousand, six hundred twenty-three".