156787791413 has 4 divisors (see below), whose sum is σ = 171041227008. Its totient is φ = 142534355820.

The previous prime is 156787791397. The next prime is 156787791467. The reversal of 156787791413 is 314197787651.

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 156787791413 - 2⁴ = 156787791397 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 (156787791473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7126717781 + ... + 7126717802.

It is an arithmetic number, because the mean of its divisors is an integer number (42760306752).

Almost surely, 2^156787791413 is an apocalyptic number.

It is an amenable number.

156787791413 is a deficient number, since it is larger than the sum of its proper divisors (14253435595).

156787791413 is a wasteful number, since it uses less digits than its factorization.

156787791413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253435594.

The product of its digits is 8890560, while the sum is 59.

The spelling of 156787791413 in words is "one hundred fifty-six billion, seven hundred eighty-seven million, seven hundred ninety-one thousand, four hundred thirteen".