16978936008946 has 16 divisors (see below), whose sum is σ = 25476713344800. Its totient is φ = 8486698475808.

The previous prime is 16978936008823. The next prime is 16978936008961. The reversal of 16978936008946 is 64980063987961.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176047125 + ... + 176143543.

It is an arithmetic number, because the mean of its divisors is an integer number (1592294584050).

Almost surely, 2^{16978936008946} is an apocalyptic number.

16978936008946 is a deficient number, since it is larger than the sum of its proper divisors (8497777335854).

16978936008946 is a wasteful number, since it uses less digits than its factorization.

16978936008946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124233.

The product of its (nonzero) digits is 846526464, while the sum is 76.

The spelling of 16978936008946 in words is "sixteen trillion, nine hundred seventy-eight billion, nine hundred thirty-six million, eight thousand, nine hundred forty-six".