15857157146 has 8 divisors (see below), whose sum is σ = 24016665504. Its totient is φ = 7851601980.

The previous prime is 15857157137. The next prime is 15857157227. The reversal of 15857157146 is 64175175851.

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

It is a junction number, because it is equal to n+sod(n) for n = 15857157094 and 15857157103.

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 3 ways as a sum of consecutive naturals, for example, 38488040 + ... + 38488451.

It is an arithmetic number, because the mean of its divisors is an integer number (3002083188).

Almost surely, 2^15857157146 is an apocalyptic number.

15857157146 is a deficient number, since it is larger than the sum of its proper divisors (8159508358).

15857157146 is a wasteful number, since it uses less digits than its factorization.

15857157146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76976596.

The product of its digits is 1176000, while the sum is 50.

The spelling of 15857157146 in words is "fifteen billion, eight hundred fifty-seven million, one hundred fifty-seven thousand, one hundred forty-six".