157607272009 has 4 divisors (see below), whose sum is σ = 171935205840. Its totient is φ = 143279338180.

The previous prime is 157607272007. The next prime is 157607272021. The reversal of 157607272009 is 900272706751.

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 157607272009 - 2¹ = 157607272007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157607272009.

It is not an unprimeable number, because it can be changed into a prime (157607272007) 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, 7163966899 + ... + 7163966920.

It is an arithmetic number, because the mean of its divisors is an integer number (42983801460).

Almost surely, 2^157607272009 is an apocalyptic number.

It is an amenable number.

157607272009 is a deficient number, since it is larger than the sum of its proper divisors (14327933831).

157607272009 is a wasteful number, since it uses less digits than its factorization.

157607272009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14327933830.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 157607272009 in words is "one hundred fifty-seven billion, six hundred seven million, two hundred seventy-two thousand, nine".