99980697570 has 32 divisors (see below), whose sum is σ = 258411650112. Its totient is φ = 24610633152.

The previous prime is 99980697547. The next prime is 99980697631. The reversal of 99980697570 is 7579608999.

It is a super-2 number, since 2×99980697570² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99980697495 and 99980697504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128179992 + ... + 128180771.

It is an arithmetic number, because the mean of its divisors is an integer number (8075364066).

Almost surely, 2^99980697570 is an apocalyptic number.

99980697570 is an abundant number, since it is smaller than the sum of its proper divisors (158430952542).

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

99980697570 is a wasteful number, since it uses less digits than its factorization.

99980697570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256360786.

The product of its (nonzero) digits is 77157360, while the sum is 69.

The spelling of 99980697570 in words is "ninety-nine billion, nine hundred eighty million, six hundred ninety-seven thousand, five hundred seventy".