1396756264521 has 16 divisors (see below), whose sum is σ = 1879472683008. Its totient is φ = 922624617600.

The previous prime is 1396756264493. The next prime is 1396756264573. The reversal of 1396756264521 is 1254626576931.

It is not a de Polignac number, because 1396756264521 - 2²⁶ = 1396689155657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1396756264121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2118750 + ... + 2698631.

It is an arithmetic number, because the mean of its divisors is an integer number (117467042688).

Almost surely, 2^{1396756264521} is an apocalyptic number.

It is an amenable number.

1396756264521 is a deficient number, since it is larger than the sum of its proper divisors (482716418487).

1396756264521 is a wasteful number, since it uses less digits than its factorization.

1396756264521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818272.

The product of its digits is 16329600, while the sum is 57.

The spelling of 1396756264521 in words is "one trillion, three hundred ninety-six billion, seven hundred fifty-six million, two hundred sixty-four thousand, five hundred twenty-one".