13239686495044 has 27 divisors (see below), whose sum is σ = 23385366343101. Its totient is φ = 6558717767760.

The previous prime is 13239686495039. The next prime is 13239686495093. The reversal of 13239686495044 is 44059468693231.

The square root of 13239686495044 is 3638638.

It is a perfect power (a square), and thus also a powerful number.

13239686495044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9227997968644 + 4011688526400 = 3037762^2 + 2002920^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 793214739 + ... + 793231429.

Almost surely, 2^{13239686495044} is an apocalyptic number.

13239686495044 is the 3638638-th square number.

It is an amenable number.

13239686495044 is a deficient number, since it is larger than the sum of its proper divisors (10145679848057).

13239686495044 is an frugal number, since it uses more digits than its factorization.

13239686495044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33604 (or 16802 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 64.

Multiplying 13239686495044 by its sum of digits (64), we get a square (847339935682816 = 29109104²).

The spelling of 13239686495044 in words is "thirteen trillion, two hundred thirty-nine billion, six hundred eighty-six million, four hundred ninety-five thousand, forty-four".