40272922818 has 30 divisors (see below), whose sum is σ = 90246902691. Its totient is φ = 13423456188.

The previous prime is 40272922817. The next prime is 40272922831. The reversal of 40272922818 is 81822927204.

It is a happy number.

40272922818 is a `hidden beast` number, since 402 + 7 + 2 + 9 + 228 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20136461409 + 20136461409 = 141903^2 + 141903^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=141903.

It is a super-2 number, since 2×40272922818² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40272922817) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2546371 + ... + 2562137.

Almost surely, 2^40272922818 is an apocalyptic number.

40272922818 is an abundant number, since it is smaller than the sum of its proper divisors (49973979873).

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

40272922818 is an frugal number, since it uses more digits than its factorization.

40272922818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31548 (or 15772 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 40272922818 in words is "forty billion, two hundred seventy-two million, nine hundred twenty-two thousand, eight hundred eighteen".