40865628840 has 96 divisors (see below), whose sum is σ = 130232789280. Its totient is φ = 10256462848.

The previous prime is 40865628809. The next prime is 40865628847. The reversal of 40865628840 is 4882656804.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (40865628847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554502 + ... + 623861.

It is an arithmetic number, because the mean of its divisors is an integer number (1356591555).

Almost surely, 2^40865628840 is an apocalyptic number.

40865628840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40865628840 is an abundant number, since it is smaller than the sum of its proper divisors (89367160440).

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

40865628840 is a wasteful number, since it uses less digits than its factorization.

40865628840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178411 (or 1178390 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 51.

The spelling of 40865628840 in words is "forty billion, eight hundred sixty-five million, six hundred twenty-eight thousand, eight hundred forty".