17974485720 has 192 divisors, whose sum is σ = 61441286400. Its totient is φ = 4550906880.

The previous prime is 17974485709. The next prime is 17974485721. The reversal of 17974485720 is 2758447971.

17974485720 is a `hidden beast` number, since 1 + 7 + 97 + 4 + 485 + 72 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17974485721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 576286 + ... + 606674.

It is an arithmetic number, because the mean of its divisors is an integer number (320006700).

Almost surely, 2^17974485720 is an apocalyptic number.

17974485720 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 17974485720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30720643200).

17974485720 is an abundant number, since it is smaller than the sum of its proper divisors (43466800680).

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

17974485720 is a wasteful number, since it uses less digits than its factorization.

17974485720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30490 (or 30483 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 17974485720 in words is "seventeen billion, nine hundred seventy-four million, four hundred eighty-five thousand, seven hundred twenty".