13777764125 has 8 divisors (see below), whose sum is σ = 17194649784. Its totient is φ = 11022211200.

The previous prime is 13777764113. The next prime is 13777764131. The reversal of 13777764125 is 52146777731.

It can be written as a sum of positive squares in 4 ways, for example, as 14485636 + 13763278489 = 3806^2 + 117317^2 .

It is not a de Polignac number, because 13777764125 - 2⁶ = 13777764061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55110932 + ... + 55111181.

It is an arithmetic number, because the mean of its divisors is an integer number (2149331223).

Almost surely, 2^13777764125 is an apocalyptic number.

It is an amenable number.

13777764125 is a deficient number, since it is larger than the sum of its proper divisors (3416885659).

13777764125 is an equidigital number, since it uses as much as digits as its factorization.

13777764125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110222128 (or 110222118 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 50.

The spelling of 13777764125 in words is "thirteen billion, seven hundred seventy-seven million, seven hundred sixty-four thousand, one hundred twenty-five".