16977984474 has 64 divisors (see below), whose sum is σ = 38791001088. Its totient is φ = 4903641600.

The previous prime is 16977984469. The next prime is 16977984493. The reversal of 16977984474 is 47448977961.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 409834 + ... + 449354.

It is an arithmetic number, because the mean of its divisors is an integer number (606109392).

Almost surely, 2^16977984474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16977984474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19395500544).

16977984474 is an abundant number, since it is smaller than the sum of its proper divisors (21813016614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16977984474 is a wasteful number, since it uses less digits than its factorization.

16977984474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39843.

The product of its digits is 85349376, while the sum is 66.

The spelling of 16977984474 in words is "sixteen billion, nine hundred seventy-seven million, nine hundred eighty-four thousand, four hundred seventy-four".