13656749690 has 32 divisors (see below), whose sum is σ = 25266802176. Its totient is φ = 5311696320.

The previous prime is 13656749683. The next prime is 13656749713. The reversal of 13656749690 is 9694765631.

13656749690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13656749690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24680 + ... + 167100.

It is an arithmetic number, because the mean of its divisors is an integer number (789587568).

Almost surely, 2^13656749690 is an apocalyptic number.

13656749690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13656749690 is a deficient number, since it is larger than the sum of its proper divisors (11610052486).

13656749690 is a wasteful number, since it uses less digits than its factorization.

13656749690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142694.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 13656749690 in words is "thirteen billion, six hundred fifty-six million, seven hundred forty-nine thousand, six hundred ninety".