16857497542 has 16 divisors (see below), whose sum is σ = 25561392912. Its totient is φ = 8337273120.

The previous prime is 16857497519. The next prime is 16857497549. The reversal of 16857497542 is 24579475861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16857497549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81868 + ... + 201040.

It is an arithmetic number, because the mean of its divisors is an integer number (1597587057).

Almost surely, 2^16857497542 is an apocalyptic number.

16857497542 is a deficient number, since it is larger than the sum of its proper divisors (8703895370).

16857497542 is a wasteful number, since it uses less digits than its factorization.

16857497542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119943.

The product of its digits is 16934400, while the sum is 58.

The spelling of 16857497542 in words is "sixteen billion, eight hundred fifty-seven million, four hundred ninety-seven thousand, five hundred forty-two".