1612322056557 has 12 divisors (see below), whose sum is σ = 2350275782140. Its totient is φ = 1065020073408.

The previous prime is 1612322056493. The next prime is 1612322056559. The reversal of 1612322056557 is 7556502232161.

It is a happy number.

1612322056557 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 32 + 2 + 0 + 565 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1046387830761 + 565934225796 = 1022931^2 + 752286^2 .

It is not a de Polignac number, because 1612322056557 - 2⁶ = 1612322056493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612322056559) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 821773768 + ... + 821775729.

Almost surely, 2^{1612322056557} is an apocalyptic number.

It is an amenable number.

1612322056557 is a deficient number, since it is larger than the sum of its proper divisors (737953725583).

1612322056557 is a wasteful number, since it uses less digits than its factorization.

1612322056557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643549612 (or 1643549609 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 1612322056557 in words is "one trillion, six hundred twelve billion, three hundred twenty-two million, fifty-six thousand, five hundred fifty-seven".