199623072969 has 16 divisors (see below), whose sum is σ = 298665987840. Its totient is φ = 131764402800.

The previous prime is 199623072953. The next prime is 199623072983. The reversal of 199623072969 is 969270326991.

199623072969 is a `hidden beast` number, since 199 + 62 + 307 + 29 + 69 = 666.

It is not a de Polignac number, because 199623072969 - 2⁴ = 199623072953 is a prime.

It is a super-2 number, since 2×199623072969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199623072949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36598497 + ... + 36603950.

It is an arithmetic number, because the mean of its divisors is an integer number (18666624240).

Almost surely, 2^199623072969 is an apocalyptic number.

It is an amenable number.

199623072969 is a deficient number, since it is larger than the sum of its proper divisors (99042914871).

199623072969 is a wasteful number, since it uses less digits than its factorization.

199623072969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73202557 (or 73202551 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 63.

The spelling of 199623072969 in words is "one hundred ninety-nine billion, six hundred twenty-three million, seventy-two thousand, nine hundred sixty-nine".