13697309952 has 90 divisors (see below), whose sum is σ = 40842961698. Its totient is φ = 4565763072.

The previous prime is 13697309947. The next prime is 13697309987. The reversal of 13697309952 is 25990379631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11171644416 + 2525665536 = 105696^2 + 50256^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 309543 + ... + 351014.

Almost surely, 2^13697309952 is an apocalyptic number.

13697309952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13697309952 is an abundant number, since it is smaller than the sum of its proper divisors (27145651746).

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

13697309952 is an frugal number, since it uses more digits than its factorization.

13697309952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660585 (or 660562 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 54.

The spelling of 13697309952 in words is "thirteen billion, six hundred ninety-seven million, three hundred nine thousand, nine hundred fifty-two".