13690717812 has 18 divisors (see below), whose sum is σ = 34607092338. Its totient is φ = 4563572592.

The previous prime is 13690717811. The next prime is 13690717819. The reversal of 13690717812 is 21871709631.

It can be written as a sum of positive squares in only one way, i.e., 11779629156 + 1911088656 = 108534^2 + 43716^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13690717811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190148823 + ... + 190148894.

It is an arithmetic number, because the mean of its divisors is an integer number (1922616241).

Almost surely, 2^13690717812 is an apocalyptic number.

13690717812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13690717812 is an abundant number, since it is smaller than the sum of its proper divisors (20916374526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13690717812 is a wasteful number, since it uses less digits than its factorization.

13690717812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380297727 (or 380297722 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 13690717812 in words is "thirteen billion, six hundred ninety million, seven hundred seventeen thousand, eight hundred twelve".