9121699472923 has 2 divisors, whose sum is σ = 9121699472924. Its totient is φ = 9121699472922.

The previous prime is 9121699472869. The next prime is 9121699472933. The reversal of 9121699472923 is 3292749961219.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9121699472923 - 2³³ = 9113109538331 is a prime.

It is not a weakly prime, because it can be changed into another prime (9121699472933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560849736461 + 4560849736462.

It is an arithmetic number, because the mean of its divisors is an integer number (4560849736462).

Almost surely, 2^{9121699472923} is an apocalyptic number.

9121699472923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9121699472923 is an equidigital number, since it uses as much as digits as its factorization.

9121699472923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 64.

The spelling of 9121699472923 in words is "nine trillion, one hundred twenty-one billion, six hundred ninety-nine million, four hundred seventy-two thousand, nine hundred twenty-three".