9881172495 has 12 divisors (see below), whose sum is σ = 17127365736. Its totient is φ = 5269958640.

The previous prime is 9881172479. The next prime is 9881172517. The reversal of 9881172495 is 5942711889.

It is a happy number.

9881172495 is a `hidden beast` number, since 9 + 8 + 81 + 1 + 72 + 495 = 666.

It is not a de Polignac number, because 9881172495 - 2⁴ = 9881172479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109790761 + ... + 109790850.

It is an arithmetic number, because the mean of its divisors is an integer number (1427280478).

Almost surely, 2^9881172495 is an apocalyptic number.

9881172495 is a deficient number, since it is larger than the sum of its proper divisors (7246193241).

9881172495 is a wasteful number, since it uses less digits than its factorization.

9881172495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219581622 (or 219581619 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 9881172495 is about 99404.0869129635. The cubic root of 9881172495 is about 2145.8671278539.

The spelling of 9881172495 in words is "nine billion, eight hundred eighty-one million, one hundred seventy-two thousand, four hundred ninety-five".