40178065308 has 48 divisors (see below), whose sum is σ = 95483015040. Its totient is φ = 13147003584.

The previous prime is 40178065307. The next prime is 40178065321. The reversal of 40178065308 is 80356087104.

It is a super-2 number, since 2×40178065308² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40178065308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40178065303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27903 + ... + 284841.

It is an arithmetic number, because the mean of its divisors is an integer number (1989229480).

Almost surely, 2^40178065308 is an apocalyptic number.

It is an amenable number.

40178065308 is an abundant number, since it is smaller than the sum of its proper divisors (55304949732).

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

40178065308 is a wasteful number, since it uses less digits than its factorization.

40178065308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257186 (or 257184 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 40178065308 in words is "forty billion, one hundred seventy-eight million, sixty-five thousand, three hundred eight".