16990979040 has 576 divisors, whose sum is σ = 69553935360. Its totient is φ = 3794688000.

The previous prime is 16990979009. The next prime is 16990979141. The reversal of 16990979040 is 4097909961.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 112522965 + ... + 112523115.

It is an arithmetic number, because the mean of its divisors is an integer number (120753360).

Almost surely, 2^16990979040 is an apocalyptic number.

16990979040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16990979040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34776967680).

16990979040 is an abundant number, since it is smaller than the sum of its proper divisors (52562956320).

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

16990979040 is a wasteful number, since it uses less digits than its factorization.

16990979040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The spelling of 16990979040 in words is "sixteen billion, nine hundred ninety million, nine hundred seventy-nine thousand, forty".