40660131888 has 120 divisors (see below), whose sum is σ = 121552608528. Its totient is φ = 12643147776.

The previous prime is 40660131857. The next prime is 40660131899. The reversal of 40660131888 is 88813106604.

It is a happy number.

40660131888 is a `hidden beast` number, since 4 + 0 + 6 + 601 + 31 + 8 + 8 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203131 + ... + 350117.

Almost surely, 2^40660131888 is an apocalyptic number.

40660131888 is a gapful number since it is divisible by the number (48) 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 40660131888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60776304264).

40660131888 is an abundant number, since it is smaller than the sum of its proper divisors (80892476640).

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

40660131888 is a wasteful number, since it uses less digits than its factorization.

40660131888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147131 (or 147122 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 40660131888 in words is "forty billion, six hundred sixty million, one hundred thirty-one thousand, eight hundred eighty-eight".