156100009 has 8 divisors (see below), whose sum is σ = 170134272. Its totient is φ = 142355280.

The previous prime is 156099989. The next prime is 156100013. The reversal of 156100009 is 900001651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156100009 - 2²³ = 147711401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156100309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71257 + ... + 73414.

It is an arithmetic number, because the mean of its divisors is an integer number (21266784).

Almost surely, 2^156100009 is an apocalyptic number.

It is an amenable number.

156100009 is a deficient number, since it is larger than the sum of its proper divisors (14034263).

156100009 is a wasteful number, since it uses less digits than its factorization.

156100009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144767.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 156100009 is about 12493.9989194813. The cubic root of 156100009 is about 538.4362728977.

The spelling of 156100009 in words is "one hundred fifty-six million, one hundred thousand, nine".