157166990953 has 4 divisors (see below), whose sum is σ = 179619418240. Its totient is φ = 134714563668.

The previous prime is 157166990947. The next prime is 157166990969. The reversal of 157166990953 is 359099661751.

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 a cyclic number.

It is not a de Polignac number, because 157166990953 - 2¹⁷ = 157166859881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157166990891 and 157166990900.

It is not an unprimeable number, because it can be changed into a prime (157166990053) 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, 11226213633 + ... + 11226213646.

It is an arithmetic number, because the mean of its divisors is an integer number (44904854560).

Almost surely, 2^157166990953 is an apocalyptic number.

It is an amenable number.

157166990953 is a deficient number, since it is larger than the sum of its proper divisors (22452427287).

157166990953 is an equidigital number, since it uses as much as digits as its factorization.

157166990953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22452427286.

The product of its (nonzero) digits is 13778100, while the sum is 61.

The spelling of 157166990953 in words is "one hundred fifty-seven billion, one hundred sixty-six million, nine hundred ninety thousand, nine hundred fifty-three".