156616000009 has 4 divisors (see below), whose sum is σ = 178989714304. Its totient is φ = 134242285716.

The previous prime is 156615999983. The next prime is 156616000019. The reversal of 156616000009 is 900000616651.

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 not a de Polignac number, because 156616000009 - 2¹⁹ = 156615475721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156616000019) 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, 11186857137 + ... + 11186857150.

It is an arithmetic number, because the mean of its divisors is an integer number (44747428576).

Almost surely, 2^156616000009 is an apocalyptic number.

It is an amenable number.

156616000009 is a deficient number, since it is larger than the sum of its proper divisors (22373714295).

156616000009 is an equidigital number, since it uses as much as digits as its factorization.

156616000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22373714294.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 156616000009 in words is "one hundred fifty-six billion, six hundred sixteen million, nine", and thus it is an aban number.