40102217920 has 28 divisors (see below), whose sum is σ = 95493407184. Its totient is φ = 16040887040.

The previous prime is 40102217891. The next prime is 40102217971. The reversal of 40102217920 is 2971220104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62659396 + ... + 62660035.

It is an arithmetic number, because the mean of its divisors is an integer number (3410478828).

Almost surely, 2^40102217920 is an apocalyptic number.

40102217920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40102217920 is an abundant number, since it is smaller than the sum of its proper divisors (55391189264).

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

40102217920 is a wasteful number, since it uses less digits than its factorization.

40102217920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125319448 (or 125319438 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 40102217920 in words is "forty billion, one hundred two million, two hundred seventeen thousand, nine hundred twenty".