157287301581 has 16 divisors (see below), whose sum is σ = 212222070144. Its totient is φ = 103608873984.

The previous prime is 157287301573. The next prime is 157287301583. The reversal of 157287301581 is 185103782751.

157287301581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157287301581 - 2³ = 157287301573 is a prime.

It is a super-2 number, since 2×157287301581² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157287301581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157287301583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258465 + ... + 617558.

It is an arithmetic number, because the mean of its divisors is an integer number (13263879384).

Almost surely, 2^157287301581 is an apocalyptic number.

It is an amenable number.

157287301581 is a deficient number, since it is larger than the sum of its proper divisors (54934768563).

157287301581 is an equidigital number, since it uses as much as digits as its factorization.

157287301581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876740.

The product of its (nonzero) digits is 470400, while the sum is 48.

The spelling of 157287301581 in words is "one hundred fifty-seven billion, two hundred eighty-seven million, three hundred one thousand, five hundred eighty-one".