126264013765 has 16 divisors (see below), whose sum is σ = 154492830576. Its totient is φ = 99037785600.

The previous prime is 126264013753. The next prime is 126264013783. The reversal of 126264013765 is 567310462621.

It can be written as a sum of positive squares in 8 ways, for example, as 14247287044 + 112016726721 = 119362^2 + 334689^2 .

It is not a de Polignac number, because 126264013765 - 2⁷ = 126264013637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565846 + ... + 756775.

It is an arithmetic number, because the mean of its divisors is an integer number (9655801911).

Almost surely, 2^126264013765 is an apocalyptic number.

It is an amenable number.

126264013765 is a deficient number, since it is larger than the sum of its proper divisors (28228816811).

126264013765 is a wasteful number, since it uses less digits than its factorization.

126264013765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323000.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 126264013765 in words is "one hundred twenty-six billion, two hundred sixty-four million, thirteen thousand, seven hundred sixty-five".