157365587681 has 8 divisors (see below), whose sum is σ = 157940798400. Its totient is φ = 156790636912.

The previous prime is 157365587677. The next prime is 157365587693. The reversal of 157365587681 is 186785563751.

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

It is a cyclic number.

It is not a de Polignac number, because 157365587681 - 2² = 157365587677 is a prime.

It is a super-2 number, since 2×157365587681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157365587651) 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, 1192220 + ... + 1317618.

It is an arithmetic number, because the mean of its divisors is an integer number (19742599800).

Almost surely, 2^157365587681 is an apocalyptic number.

It is an amenable number.

157365587681 is a deficient number, since it is larger than the sum of its proper divisors (575210719).

157365587681 is a wasteful number, since it uses less digits than its factorization.

157365587681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129975.

The product of its digits is 42336000, while the sum is 62.

The spelling of 157365587681 in words is "one hundred fifty-seven billion, three hundred sixty-five million, five hundred eighty-seven thousand, six hundred eighty-one".