131533879840 has 96 divisors (see below), whose sum is σ = 340104308544. Its totient is φ = 47674506240.

The previous prime is 131533879823. The next prime is 131533879861. The reversal of 131533879840 is 48978335131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418602 + ... + 662038.

It is an arithmetic number, because the mean of its divisors is an integer number (3542753214).

Almost surely, 2^131533879840 is an apocalyptic number.

131533879840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131533879840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170052154272).

131533879840 is an abundant number, since it is smaller than the sum of its proper divisors (208570428704).

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

131533879840 is a wasteful number, since it uses less digits than its factorization.

131533879840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243770 (or 243762 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 131533879840 in words is "one hundred thirty-one billion, five hundred thirty-three million, eight hundred seventy-nine thousand, eight hundred forty".