40505257220 has 48 divisors (see below), whose sum is σ = 88805179008. Its totient is φ = 15489661440.

The previous prime is 40505257183. The next prime is 40505257249. The reversal of 40505257220 is 2275250504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910700 + ... + 954140.

It is an arithmetic number, because the mean of its divisors is an integer number (1850107896).

Almost surely, 2^40505257220 is an apocalyptic number.

It is an amenable number.

40505257220 is an abundant number, since it is smaller than the sum of its proper divisors (48299921788).

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

40505257220 is a wasteful number, since it uses less digits than its factorization.

40505257220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45500 (or 45498 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 32.

The spelling of 40505257220 in words is "forty billion, five hundred five million, two hundred fifty-seven thousand, two hundred twenty".