1156056021937 has 2 divisors, whose sum is σ = 1156056021938. Its totient is φ = 1156056021936.

The previous prime is 1156056021931. The next prime is 1156056021947. The reversal of 1156056021937 is 7391206506511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099727645041 + 56328376896 = 1048679^2 + 237336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156056021937 - 2³ = 1156056021929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1156056021931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578028010968 + 578028010969.

It is an arithmetic number, because the mean of its divisors is an integer number (578028010969).

Almost surely, 2^{1156056021937} is an apocalyptic number.

It is an amenable number.

1156056021937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156056021937 is an equidigital number, since it uses as much as digits as its factorization.

1156056021937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 1156056021937 in words is "one trillion, one hundred fifty-six billion, fifty-six million, twenty-one thousand, nine hundred thirty-seven".