15858887157 has 32 divisors (see below), whose sum is σ = 24008140800. Its totient is φ = 10341776304.

The previous prime is 15858887119. The next prime is 15858887171. The reversal of 15858887157 is 75178885851.

It is not a de Polignac number, because 15858887157 - 2²³ = 15850498549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15858887094 and 15858887103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15858887857) 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 31 ways as a sum of consecutive naturals, for example, 4194694 + ... + 4198472.

It is an arithmetic number, because the mean of its divisors is an integer number (750254400).

Almost surely, 2^15858887157 is an apocalyptic number.

It is an amenable number.

15858887157 is a deficient number, since it is larger than the sum of its proper divisors (8149253643).

15858887157 is a wasteful number, since it uses less digits than its factorization.

15858887157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142 (or 7136 counting only the distinct ones).

The product of its digits is 25088000, while the sum is 63.

The spelling of 15858887157 in words is "fifteen billion, eight hundred fifty-eight million, eight hundred eighty-seven thousand, one hundred fifty-seven".