999998477238475 has 96 divisors (see below), whose sum is σ = 1533480050995200. Its totient is φ = 635983678771200.

The previous prime is 999998477238389. The next prime is 999998477238511. The reversal of 999998477238475 is 574832774899999.

999998477238475 is a nontrivial binomial coefficient, being equal to C(44721326, 2).

It is not a de Polignac number, because 999998477238475 - 2⁷ = 999998477238347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6149101014 + ... + 6149263636.

It is an arithmetic number, because the mean of its divisors is an integer number (15973750531200).

Almost surely, 2^{999998477238475} is an apocalyptic number.

999998477238475 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

999998477238475 is the 44721325-th triangular number and also the 22360663-rd hexagonal number.

999998477238475 is the 14907109-th centered nonagonal number.

999998477238475 is a deficient number, since it is larger than the sum of its proper divisors (533481573756725).

999998477238475 is a wasteful number, since it uses less digits than its factorization.

999998477238475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253205 (or 253200 counting only the distinct ones).

The product of its digits is 622196951040, while the sum is 100.

The spelling of 999998477238475 in words is "nine hundred ninety-nine trillion, nine hundred ninety-eight billion, four hundred seventy-seven million, two hundred thirty-eight thousand, four hundred seventy-five".