40684862840 has 64 divisors (see below), whose sum is σ = 95573217600. Its totient is φ = 15557870592.

The previous prime is 40684862833. The next prime is 40684862957. The reversal of 40684862840 is 4826848604.

40684862840 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 2×40684862840² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1822466 + ... + 1844654.

It is an arithmetic number, because the mean of its divisors is an integer number (1493331525).

Almost surely, 2^40684862840 is an apocalyptic number.

40684862840 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 40684862840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47786608800).

40684862840 is an abundant number, since it is smaller than the sum of its proper divisors (54888354760).

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

40684862840 is a wasteful number, since it uses less digits than its factorization.

40684862840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24216 (or 24212 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 50.

The spelling of 40684862840 in words is "forty billion, six hundred eighty-four million, eight hundred sixty-two thousand, eight hundred forty".