40817928032688 has 20 divisors (see below), whose sum is σ = 105446314084568. Its totient is φ = 13605976010880.

The previous prime is 40817928032681. The next prime is 40817928032759. The reversal of 40817928032688 is 88623082971804.

It is a super-2 number, since 2×40817928032688² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40817928032681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425186750293 + ... + 425186750388.

Almost surely, 2^{40817928032688} is an apocalyptic number.

40817928032688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40817928032688 is an abundant number, since it is smaller than the sum of its proper divisors (64628386051880).

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

40817928032688 is a wasteful number, since it uses less digits than its factorization.

40817928032688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850373500692 (or 850373500686 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 66.

The spelling of 40817928032688 in words is "forty trillion, eight hundred seventeen billion, nine hundred twenty-eight million, thirty-two thousand, six hundred eighty-eight".