99647072371 has 16 divisors (see below), whose sum is σ = 125732130048. Its totient is φ = 76711557600.

The previous prime is 99647072363. The next prime is 99647072401. The reversal of 99647072371 is 17327074699.

It is a cyclic number.

It is not a de Polignac number, because 99647072371 - 2³ = 99647072363 is a prime.

It is a super-2 number, since 2×99647072371² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99647072171) 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, 7789500 + ... + 7802281.

It is an arithmetic number, because the mean of its divisors is an integer number (7858258128).

Almost surely, 2^99647072371 is an apocalyptic number.

99647072371 is a deficient number, since it is larger than the sum of its proper divisors (26085057677).

99647072371 is a wasteful number, since it uses less digits than its factorization.

99647072371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15591882.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 99647072371 in words is "ninety-nine billion, six hundred forty-seven million, seventy-two thousand, three hundred seventy-one".