120156015609 has 12 divisors (see below), whose sum is σ = 198352787776. Its totient is φ = 68660580312.

The previous prime is 120156015601. The next prime is 120156015631. The reversal of 120156015609 is 906510651021.

120156015609 is a `hidden beast` number, since 1 + 20 + 1 + 560 + 15 + 60 + 9 = 666.

It is not a de Polignac number, because 120156015609 - 2³ = 120156015601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120156015601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 953619109 + ... + 953619234.

Almost surely, 2^120156015609 is an apocalyptic number.

It is an amenable number.

120156015609 is a deficient number, since it is larger than the sum of its proper divisors (78196772167).

120156015609 is a wasteful number, since it uses less digits than its factorization.

120156015609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907238356 (or 1907238353 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 120156015609 in words is "one hundred twenty billion, one hundred fifty-six million, fifteen thousand, six hundred nine".