40220720871 has 32 divisors (see below), whose sum is σ = 54719938560. Its totient is φ = 26273636064.

The previous prime is 40220720849. The next prime is 40220720899. The reversal of 40220720871 is 17802702204.

It is not a de Polignac number, because 40220720871 - 2²⁶ = 40153612007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220724871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20240940 + ... + 20242926.

It is an arithmetic number, because the mean of its divisors is an integer number (1709998080).

Almost surely, 2^40220720871 is an apocalyptic number.

40220720871 is a deficient number, since it is larger than the sum of its proper divisors (14499217689).

40220720871 is a wasteful number, since it uses less digits than its factorization.

40220720871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675.

The product of its (nonzero) digits is 12544, while the sum is 33.

The spelling of 40220720871 in words is "forty billion, two hundred twenty million, seven hundred twenty thousand, eight hundred seventy-one".