11998079970 has 64 divisors (see below), whose sum is σ = 30875281920. Its totient is φ = 2973155328.

The previous prime is 11998079921. The next prime is 11998080001. The reversal of 11998079970 is 7997089911.

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, 108607 + ... + 189186.

It is an arithmetic number, because the mean of its divisors is an integer number (482426280).

Almost surely, 2^11998079970 is an apocalyptic number.

11998079970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11998079970 is an abundant number, since it is smaller than the sum of its proper divisors (18877201950).

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

11998079970 is a wasteful number, since it uses less digits than its factorization.

11998079970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297899.

The product of its (nonzero) digits is 2571912, while the sum is 60.

The spelling of 11998079970 in words is "eleven billion, nine hundred ninety-eight million, seventy-nine thousand, nine hundred seventy".