157669637091 has 8 divisors (see below), whose sum is σ = 215907971664. Its totient is φ = 102272196960.

The previous prime is 157669637087. The next prime is 157669637093. The reversal of 157669637091 is 190736966751.

It is a happy number.

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

It is not a de Polignac number, because 157669637091 - 2² = 157669637087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157669637093) 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, 710223480 + ... + 710223701.

It is an arithmetic number, because the mean of its divisors is an integer number (26988496458).

Almost surely, 2^157669637091 is an apocalyptic number.

157669637091 is a deficient number, since it is larger than the sum of its proper divisors (58238334573).

157669637091 is a wasteful number, since it uses less digits than its factorization.

157669637091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420447221.

The product of its (nonzero) digits is 12859560, while the sum is 60.

The spelling of 157669637091 in words is "one hundred fifty-seven billion, six hundred sixty-nine million, six hundred thirty-seven thousand, ninety-one".