40397021760 has 112 divisors (see below), whose sum is σ = 135011160000. Its totient is φ = 10205558784.

The previous prime is 40397021737. The next prime is 40397021767. The reversal of 40397021760 is 6712079304.

It is not an unprimeable number, because it can be changed into a prime (40397021767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1089135 + ... + 1125614.

Almost surely, 2^40397021760 is an apocalyptic number.

40397021760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40397021760 is an abundant number, since it is smaller than the sum of its proper divisors (94614138240).

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

40397021760 is a wasteful number, since it uses less digits than its factorization.

40397021760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214788 (or 2214778 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 40397021760 in words is "forty billion, three hundred ninety-seven million, twenty-one thousand, seven hundred sixty".