13001605544 has 16 divisors (see below), whose sum is σ = 24387501600. Its totient is φ = 6498271792.

The previous prime is 13001605511. The next prime is 13001605553. The reversal of 13001605544 is 44550610031.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294452 + ... + 335715.

It is an arithmetic number, because the mean of its divisors is an integer number (1524218850).

Almost surely, 2^13001605544 is an apocalyptic number.

It is an amenable number.

13001605544 is a deficient number, since it is larger than the sum of its proper divisors (11385896056).

13001605544 is a wasteful number, since it uses less digits than its factorization.

13001605544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632752 (or 632748 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 13001605544 in words is "thirteen billion, one million, six hundred five thousand, five hundred forty-four".