131440165632 has 108 divisors (see below), whose sum is σ = 380050334664. Its totient is φ = 43689000960.

The previous prime is 131440165631. The next prime is 131440165651. The reversal of 131440165632 is 236561044131.

131440165632 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 4 + 0 + 16 + 5 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (131440165631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 732507 + ... + 894117.

Almost surely, 2^131440165632 is an apocalyptic number.

131440165632 is a gapful number since it is divisible by the number (12) 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 131440165632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190025167332).

131440165632 is an abundant number, since it is smaller than the sum of its proper divisors (248610169032).

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

131440165632 is a wasteful number, since it uses less digits than its factorization.

131440165632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161986 (or 161969 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 131440165632 in words is "one hundred thirty-one billion, four hundred forty million, one hundred sixty-five thousand, six hundred thirty-two".