40646608000 has 64 divisors (see below), whose sum is σ = 101057668920. Its totient is φ = 16258636800.

The previous prime is 40646607973. The next prime is 40646608033. The reversal of 40646608000 is 80664604.

It can be written as a sum of positive squares in 4 ways, for example, as 13247089216 + 27399518784 = 115096^2 + 165528^2 .

It is a tau number, because it is divible by the number of its divisors (64).

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, 1254207 + ... + 1286206.

Almost surely, 2^40646608000 is an apocalyptic number.

40646608000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40646608000 is an abundant number, since it is smaller than the sum of its proper divisors (60411060920).

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

40646608000 is an equidigital number, since it uses as much as digits as its factorization.

40646608000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540442 (or 2540420 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 40646608000 in words is "forty billion, six hundred forty-six million, six hundred eight thousand".