40731640000 has 70 divisors (see below), whose sum is σ = 101001328604. Its totient is φ = 16292640000.

The previous prime is 40731639989. The next prime is 40731640003. The reversal of 40731640000 is 4613704.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (40731640003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 469146 + ... + 549145.

Almost surely, 2^40731640000 is an apocalyptic number.

40731640000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40731640000 is an abundant number, since it is smaller than the sum of its proper divisors (60269688604).

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

40731640000 is an equidigital number, since it uses as much as digits as its factorization.

40731640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018323 (or 1018298 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The spelling of 40731640000 in words is "forty billion, seven hundred thirty-one million, six hundred forty thousand".