157316661 has 60 divisors (see below), whose sum is σ = 253763136. Its totient is φ = 97025040.

The previous prime is 157316659. The next prime is 157316683. The reversal of 157316661 is 166613751.

It is not a de Polignac number, because 157316661 - 2¹ = 157316659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157316641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3347140 + ... + 3347186.

Almost surely, 2^157316661 is an apocalyptic number.

It is an amenable number.

157316661 is a deficient number, since it is larger than the sum of its proper divisors (96446475).

157316661 is an equidigital number, since it uses as much as digits as its factorization.

157316661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 124 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 157316661 is about 12542.5938704879. The cubic root of 157316661 is about 539.8315215147.

The spelling of 157316661 in words is "one hundred fifty-seven million, three hundred sixteen thousand, six hundred sixty-one".