157187471885 has 12 divisors (see below), whose sum is σ = 189882548604. Its totient is φ = 124917105600.

The previous prime is 157187471873. The next prime is 157187471891. The reversal of 157187471885 is 588174781751.

It can be written as a sum of positive squares in 2 ways, for example, as 30839925769 + 126347546116 = 175613^2 + 355454^2 .

It is not a de Polignac number, because 157187471885 - 2⁴ = 157187471869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 575384 + ... + 803393.

It is an arithmetic number, because the mean of its divisors is an integer number (15823545717).

Almost surely, 2^157187471885 is an apocalyptic number.

It is an amenable number.

157187471885 is a deficient number, since it is larger than the sum of its proper divisors (32695076719).

157187471885 is an equidigital number, since it uses as much as digits as its factorization.

157187471885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379084 (or 1378933 counting only the distinct ones).

The product of its digits is 17561600, while the sum is 62.

The spelling of 157187471885 in words is "one hundred fifty-seven billion, one hundred eighty-seven million, four hundred seventy-one thousand, eight hundred eighty-five".