1156130615021 has 4 divisors (see below), whose sum is σ = 1164448101600. Its totient is φ = 1147813128444.

The previous prime is 1156130615011. The next prime is 1156130615069. The reversal of 1156130615021 is 1205160316511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1156130615021 - 2⁶ = 1156130614957 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 (1156130615011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4158743081 + ... + 4158743358.

It is an arithmetic number, because the mean of its divisors is an integer number (291112025400).

Almost surely, 2^{1156130615021} is an apocalyptic number.

It is an amenable number.

1156130615021 is a deficient number, since it is larger than the sum of its proper divisors (8317486579).

1156130615021 is an equidigital number, since it uses as much as digits as its factorization.

1156130615021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8317486578.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 1156130615021 in words is "one trillion, one hundred fifty-six billion, one hundred thirty million, six hundred fifteen thousand, twenty-one".