40220402004 has 36 divisors (see below), whose sum is σ = 104416032084. Its totient is φ = 13044454272.

The previous prime is 40220401979. The next prime is 40220402021. The reversal of 40220402004 is 40020402204.

40220402004 is a `hidden beast` number, since 40 + 220 + 402 + 0 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28510997904 + 11709404100 = 168852^2 + 108210^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15096417 + ... + 15099080.

Almost surely, 2^40220402004 is an apocalyptic number.

It is an amenable number.

40220402004 is an abundant number, since it is smaller than the sum of its proper divisors (64195630080).

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

40220402004 is a wasteful number, since it uses less digits than its factorization.

40220402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30195544 (or 30195539 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 40220402004 its reverse (40020402204), we get a palindrome (80240804208).

The spelling of 40220402004 in words is "forty billion, two hundred twenty million, four hundred two thousand, four".