157591749205191 has 16 divisors (see below), whose sum is σ = 254265679390464. Its totient is φ = 84755226463104.

The previous prime is 157591749205183. The next prime is 157591749205199. The reversal of 157591749205191 is 191502947195751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (157591749205183) and next prime (157591749205199).

It is not a de Polignac number, because 157591749205191 - 2³ = 157591749205183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157591749205199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220716735225 + ... + 220716735938.

It is an arithmetic number, because the mean of its divisors is an integer number (15891604961904).

Almost surely, 2^{157591749205191} is an apocalyptic number.

157591749205191 is a deficient number, since it is larger than the sum of its proper divisors (96673930185273).

157591749205191 is a wasteful number, since it uses less digits than its factorization.

157591749205191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441433471190.

The product of its (nonzero) digits is 35721000, while the sum is 66.

The spelling of 157591749205191 in words is "one hundred fifty-seven trillion, five hundred ninety-one billion, seven hundred forty-nine million, two hundred five thousand, one hundred ninety-one".