40620400188 has 96 divisors (see below), whose sum is σ = 101687685120. Its totient is φ = 12588956160.

The previous prime is 40620400187. The next prime is 40620400193. The reversal of 40620400188 is 88100402604.

40620400188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40620400188² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620400187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3128053 + ... + 3141011.

It is an arithmetic number, because the mean of its divisors is an integer number (1059246720).

Almost surely, 2^40620400188 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 40620400188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50843842560).

40620400188 is an abundant number, since it is smaller than the sum of its proper divisors (61067284932).

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

40620400188 is a wasteful number, since it uses less digits than its factorization.

40620400188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13307 (or 13305 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 40620400188 in words is "forty billion, six hundred twenty million, four hundred thousand, one hundred eighty-eight".