99783474873 has 32 divisors (see below), whose sum is σ = 147337408512. Its totient is φ = 59747846400.

The previous prime is 99783474859. The next prime is 99783474877. The reversal of 99783474873 is 37847438799.

It is a happy number.

It is not a de Polignac number, because 99783474873 - 2¹⁸ = 99783212729 is a prime.

It is a super-3 number, since 3×99783474873³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a junction number, because it is equal to n+sod(n) for n = 99783474798 and 99783474807.

It is not an unprimeable number, because it can be changed into a prime (99783474877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406878 + ... + 604248.

It is an arithmetic number, because the mean of its divisors is an integer number (4604294016).

Almost surely, 2^99783474873 is an apocalyptic number.

It is an amenable number.

99783474873 is a deficient number, since it is larger than the sum of its proper divisors (47553933639).

99783474873 is a wasteful number, since it uses less digits than its factorization.

99783474873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197845.

The product of its digits is 256048128, while the sum is 69.

The spelling of 99783474873 in words is "ninety-nine billion, seven hundred eighty-three million, four hundred seventy-four thousand, eight hundred seventy-three".