16893977642 has 32 divisors (see below), whose sum is σ = 26961991680. Its totient is φ = 7938580608.

The previous prime is 16893977629. The next prime is 16893977669. The reversal of 16893977642 is 24677939861.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1737338 + ... + 1747034.

It is an arithmetic number, because the mean of its divisors is an integer number (842562240).

Almost surely, 2^16893977642 is an apocalyptic number.

16893977642 is a deficient number, since it is larger than the sum of its proper divisors (10068014038).

16893977642 is an equidigital number, since it uses as much as digits as its factorization.

16893977642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883 (or 9845 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 62.

The spelling of 16893977642 in words is "sixteen billion, eight hundred ninety-three million, nine hundred seventy-seven thousand, six hundred forty-two".