40136965720 has 128 divisors (see below), whose sum is σ = 97511040000. Its totient is φ = 14821747200.

The previous prime is 40136965679. The next prime is 40136965721. The reversal of 40136965720 is 2756963104.

40136965720 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 2×40136965720² (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 (40136965721) 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, 6078981 + ... + 6085579.

It is an arithmetic number, because the mean of its divisors is an integer number (761805000).

Almost surely, 2^40136965720 is an apocalyptic number.

40136965720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40136965720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48755520000).

40136965720 is an abundant number, since it is smaller than the sum of its proper divisors (57374074280).

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

40136965720 is a wasteful number, since it uses less digits than its factorization.

40136965720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833 (or 6829 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 40136965720 in words is "forty billion, one hundred thirty-six million, nine hundred sixty-five thousand, seven hundred twenty".