40168886064 has 40 divisors (see below), whose sum is σ = 104312942592. Its totient is φ = 13319522880.

The previous prime is 40168886059. The next prime is 40168886137. The reversal of 40168886064 is 46068886104.

It is a super-2 number, since 2×40168886064² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40168885998 and 40168886016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181544 + ... + 2199879.

Almost surely, 2^40168886064 is an apocalyptic number.

It is an amenable number.

40168886064 is an abundant number, since it is smaller than the sum of its proper divisors (64144056528).

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

40168886064 is a wasteful number, since it uses less digits than its factorization.

40168886064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381625 (or 4381619 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 40168886064 in words is "forty billion, one hundred sixty-eight million, eight hundred eighty-six thousand, sixty-four".