40605855828 has 24 divisors (see below), whose sum is σ = 94861310880. Its totient is φ = 13518954720.

The previous prime is 40605855821. The next prime is 40605855859. The reversal of 40605855828 is 82855850604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40605855821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030958 + ... + 2050853.

It is an arithmetic number, because the mean of its divisors is an integer number (3952554620).

Almost surely, 2^40605855828 is an apocalyptic number.

It is an amenable number.

40605855828 is an abundant number, since it is smaller than the sum of its proper divisors (54255455052).

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

40605855828 is a wasteful number, since it uses less digits than its factorization.

40605855828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082647 (or 4082645 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 51.

The spelling of 40605855828 in words is "forty billion, six hundred five million, eight hundred fifty-five thousand, eight hundred twenty-eight".