9977897475 has 144 divisors (see below), whose sum is σ = 22098585600. Its totient is φ = 4190780160.

The previous prime is 9977897417. The next prime is 9977897497. The reversal of 9977897475 is 5747987799.

9977897475 is a `hidden beast` number, since 9 + 9 + 77 + 89 + 7 + 475 = 666.

It is not a de Polignac number, because 9977897475 - 2¹⁵ = 9977864707 is a prime.

It is a super-2 number, since 2×9977897475² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4892506 + ... + 4894544.

It is an arithmetic number, because the mean of its divisors is an integer number (153462400).

Almost surely, 2^9977897475 is an apocalyptic number.

9977897475 is an abundant number, since it is smaller than the sum of its proper divisors (12120688125).

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

9977897475 is a wasteful number, since it uses less digits than its factorization.

9977897475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314 (or 2306 counting only the distinct ones).

The product of its digits is 280052640, while the sum is 72.

The square root of 9977897475 is about 99889.4262422205. The cubic root of 9977897475 is about 2152.8462376095.

The spelling of 9977897475 in words is "nine billion, nine hundred seventy-seven million, eight hundred ninety-seven thousand, four hundred seventy-five".