40665475420 has 24 divisors (see below), whose sum is σ = 89892104400. Its totient is φ = 15410074752.

The previous prime is 40665475397. The next prime is 40665475493. The reversal of 40665475420 is 2457456604.

It is a super-2 number, since 2×40665475420² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53506825 + ... + 53507584.

It is an arithmetic number, because the mean of its divisors is an integer number (3745504350).

Almost surely, 2^40665475420 is an apocalyptic number.

It is an amenable number.

40665475420 is an abundant number, since it is smaller than the sum of its proper divisors (49226628980).

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

40665475420 is a wasteful number, since it uses less digits than its factorization.

40665475420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107014437 (or 107014435 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 40665475420 in words is "forty billion, six hundred sixty-five million, four hundred seventy-five thousand, four hundred twenty".