40000720790016 has 480 divisors, whose sum is σ = 141237208240128. Its totient is φ = 11060099665920.

The previous prime is 40000720789973. The next prime is 40000720790021. The reversal of 40000720790016 is 61009702700004.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26257471 + ... + 27739073.

Almost surely, 2^{40000720790016} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40000720790016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70618604120064).

40000720790016 is an abundant number, since it is smaller than the sum of its proper divisors (101236487450112).

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

40000720790016 is an equidigital number, since it uses as much as digits as its factorization.

40000720790016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481674 (or 1481646 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 40000720790016 in words is "forty trillion, seven hundred twenty million, seven hundred ninety thousand, sixteen".