40626646064 has 20 divisors (see below), whose sum is σ = 78970534104. Its totient is φ = 20247153408.

The previous prime is 40626646063. The next prime is 40626646111. The reversal of 40626646064 is 46064662604.

It is not an unprimeable number, because it can be changed into a prime (40626646063) 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, 4130537 + ... + 4140360.

Almost surely, 2^40626646064 is an apocalyptic number.

It is an amenable number.

40626646064 is a deficient number, since it is larger than the sum of its proper divisors (38343888040).

40626646064 is a wasteful number, since it uses less digits than its factorization.

40626646064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271212 (or 8271206 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 40626646064 in words is "forty billion, six hundred twenty-six million, six hundred forty-six thousand, sixty-four".