15857157142 has 16 divisors (see below), whose sum is σ = 25046346240. Its totient is φ = 7508666088.

The previous prime is 15857157137. The next prime is 15857157227. The reversal of 15857157142 is 24175175851.

It is a junction number, because it is equal to n+sod(n) for n = 15857157092 and 15857157101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39943 + ... + 182509.

It is an arithmetic number, because the mean of its divisors is an integer number (1565396640).

Almost surely, 2^15857157142 is an apocalyptic number.

15857157142 is a deficient number, since it is larger than the sum of its proper divisors (9189189098).

15857157142 is a wasteful number, since it uses less digits than its factorization.

15857157142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145515.

The product of its digits is 392000, while the sum is 46.

The spelling of 15857157142 in words is "fifteen billion, eight hundred fifty-seven million, one hundred fifty-seven thousand, one hundred forty-two".