40288838025690 has 48 divisors (see below), whose sum is σ = 110912801157288. Its totient is φ = 10111708366848.

The previous prime is 40288838025671. The next prime is 40288838025691. The reversal of 40288838025690 is 9652083888204.

40288838025690 is a `hidden beast` number, since 40 + 2 + 8 + 88 + 380 + 2 + 56 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 40140752362929 + 148085662761 = 6335673^2 + 384819^2 .

It is a super-2 number, since 2×40288838025690² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40288838025691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13166285407 + ... + 13166288466.

Almost surely, 2^{40288838025690} is an apocalyptic number.

40288838025690 is an abundant number, since it is smaller than the sum of its proper divisors (70623963131598).

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

40288838025690 is a wasteful number, since it uses less digits than its factorization.

40288838025690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26332573903 (or 26332573900 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 40288838025690 in words is "forty trillion, two hundred eighty-eight billion, eight hundred thirty-eight million, twenty-five thousand, six hundred ninety".