8172295845 has 128 divisors (see below), whose sum is σ = 16721510400. Its totient is φ = 3321679872.

The previous prime is 8172295829. The next prime is 8172295847. The reversal of 8172295845 is 5485922718.

It is not a de Polignac number, because 8172295845 - 2⁴ = 8172295829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172295847) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 2431276 + ... + 2434634.

It is an arithmetic number, because the mean of its divisors is an integer number (130636800).

Almost surely, 2^8172295845 is an apocalyptic number.

8172295845 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8172295845 is an abundant number, since it is smaller than the sum of its proper divisors (8549214555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8172295845 is a wasteful number, since it uses less digits than its factorization.

8172295845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467.

The product of its digits is 1612800, while the sum is 51.

The square root of 8172295845 is about 90400.7513519661. The cubic root of 8172295845 is about 2014.2561270561.

The spelling of 8172295845 in words is "eight billion, one hundred seventy-two million, two hundred ninety-five thousand, eight hundred forty-five".