108991401546969 has 24 divisors (see below), whose sum is σ = 157876558711872. Its totient is φ = 72455994093600.

The previous prime is 108991401546961. The next prime is 108991401546983. The reversal of 108991401546969 is 969645104199801.

108991401546969 is a `hidden beast` number, since 1 + 0 + 8 + 9 + 9 + 14 + 0 + 1 + 546 + 9 + 69 = 666.

It is not a de Polignac number, because 108991401546969 - 2³ = 108991401546961 is a prime.

It is a super-2 number, since 2×108991401546969² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108991401546897 and 108991401546906.

It is not an unprimeable number, because it can be changed into a prime (108991401546961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3854539 + ... + 15259104.

It is an arithmetic number, because the mean of its divisors is an integer number (6578189946328).

Almost surely, 2^{108991401546969} is an apocalyptic number.

It is an amenable number.

108991401546969 is a deficient number, since it is larger than the sum of its proper divisors (48885157164903).

108991401546969 is a wasteful number, since it uses less digits than its factorization.

108991401546969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19115437 (or 19115434 counting only the distinct ones).

The product of its (nonzero) digits is 151165440, while the sum is 72.

The spelling of 108991401546969 in words is "one hundred eight trillion, nine hundred ninety-one billion, four hundred one million, five hundred forty-six thousand, nine hundred sixty-nine".