853172853440 has 56 divisors (see below), whose sum is σ = 2040567889392. Its totient is φ = 339765724160.

The previous prime is 853172853437. The next prime is 853172853457. The reversal of 853172853440 is 44358271358.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5799971 + ... + 5945250.

Almost surely, 2^853172853440 is an apocalyptic number.

853172853440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

853172853440 is an abundant number, since it is smaller than the sum of its proper divisors (1187395035952).

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

853172853440 is a wasteful number, since it uses less digits than its factorization.

853172853440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745465 (or 11745455 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 853172853440 in words is "eight hundred fifty-three billion, one hundred seventy-two million, eight hundred fifty-three thousand, four hundred forty".