40115626812 has 72 divisors (see below), whose sum is σ = 105277326336. Its totient is φ = 13356839088.

The previous prime is 40115626777. The next prime is 40115626931. The reversal of 40115626812 is 21862651104.

It is a happy number.

40115626812 is a `hidden beast` number, since 4 + 0 + 1 + 15 + 626 + 8 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 858853 + ... + 904355.

It is an arithmetic number, because the mean of its divisors is an integer number (1462185088).

Almost surely, 2^40115626812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40115626812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52638663168).

40115626812 is an abundant number, since it is smaller than the sum of its proper divisors (65161699524).

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

40115626812 is a wasteful number, since it uses less digits than its factorization.

40115626812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46429 (or 46415 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 40115626812 in words is "forty billion, one hundred fifteen million, six hundred twenty-six thousand, eight hundred twelve".