40401433278 has 12 divisors (see below), whose sum is σ = 87536438808. Its totient is φ = 13467144420.

The previous prime is 40401433277. The next prime is 40401433279. The reversal of 40401433278 is 87233410404.

It is an interprime number because it is at equal distance from previous prime (40401433277) and next prime (40401433279).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401433277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122262018 + ... + 1122262053.

It is an arithmetic number, because the mean of its divisors is an integer number (7294703234).

Almost surely, 2^40401433278 is an apocalyptic number.

40401433278 is an abundant number, since it is smaller than the sum of its proper divisors (47135005530).

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

40401433278 is a wasteful number, since it uses less digits than its factorization.

40401433278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244524079 (or 2244524076 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 40401433278 in words is "forty billion, four hundred one million, four hundred thirty-three thousand, two hundred seventy-eight".