40020040026 has 36 divisors (see below), whose sum is σ = 86839965342. Its totient is φ = 13320055584.

The previous prime is 40020040007. The next prime is 40020040033. The reversal of 40020040026 is 62004002004.

40020040026 is a `hidden beast` number, since 40 + 0 + 200 + 400 + 26 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 38606355225 + 1413684801 = 196485^2 + 37599^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 40020039990 and 40020040008.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 27542316 + ... + 27543768.

Almost surely, 2^40020040026 is an apocalyptic number.

40020040026 is an abundant number, since it is smaller than the sum of its proper divisors (46819925316).

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

40020040026 is a wasteful number, since it uses less digits than its factorization.

40020040026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The spelling of 40020040026 in words is "forty billion, twenty million, forty thousand, twenty-six".