40420800688 has 20 divisors (see below), whose sum is σ = 78336531280. Its totient is φ = 20204921664.

The previous prime is 40420800683. The next prime is 40420800767. The reversal of 40420800688 is 88600802404.

It is a super-2 number, since 2×40420800688² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40420800688.

It is not an unprimeable number, because it can be changed into a prime (40420800683) 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, 281220 + ... + 399907.

It is an arithmetic number, because the mean of its divisors is an integer number (3916826564).

Almost surely, 2^40420800688 is an apocalyptic number.

It is an amenable number.

40420800688 is a deficient number, since it is larger than the sum of its proper divisors (37915730592).

40420800688 is a wasteful number, since it uses less digits than its factorization.

40420800688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684844 (or 684838 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 40420800688 in words is "forty billion, four hundred twenty million, eight hundred thousand, six hundred eighty-eight".