17970797900 has 72 divisors (see below), whose sum is σ = 42728150640. Its totient is φ = 6506208000.

The previous prime is 17970797899. The next prime is 17970797909. The reversal of 17970797900 is 979707971.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (17970797909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216230 + ... + 287570.

Almost surely, 2^17970797900 is an apocalyptic number.

17970797900 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 17970797900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21364075320).

17970797900 is an abundant number, since it is smaller than the sum of its proper divisors (24757352740).

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

17970797900 is a wasteful number, since it uses less digits than its factorization.

17970797900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71595 (or 71588 counting only the distinct ones).

The product of its (nonzero) digits is 1750329, while the sum is 56.

The spelling of 17970797900 in words is "seventeen billion, nine hundred seventy million, seven hundred ninety-seven thousand, nine hundred".