156499053091 has 4 divisors (see below), whose sum is σ = 156638412232. Its totient is φ = 156359693952.

The previous prime is 156499053083. The next prime is 156499053107. The reversal of 156499053091 is 190350994651.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 156499053091 - 2³ = 156499053083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156499053031) 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, 69677886 + ... + 69680131.

It is an arithmetic number, because the mean of its divisors is an integer number (39159603058).

Almost surely, 2^156499053091 is an apocalyptic number.

156499053091 is a deficient number, since it is larger than the sum of its proper divisors (139359141).

156499053091 is a wasteful number, since it uses less digits than its factorization.

156499053091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139359140.

The product of its (nonzero) digits is 1312200, while the sum is 52.

The spelling of 156499053091 in words is "one hundred fifty-six billion, four hundred ninety-nine million, fifty-three thousand, ninety-one".