40104614646 has 64 divisors (see below), whose sum is σ = 90613013760. Its totient is φ = 13145172480.

The previous prime is 40104614633. The next prime is 40104614647. The reversal of 40104614646 is 64641640104.

40104614646 is a `hidden beast` number, since 4 + 0 + 1 + 0 + 4 + 6 + 1 + 4 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40104614646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40104614647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2077981 + ... + 2097191.

It is an arithmetic number, because the mean of its divisors is an integer number (1415828340).

Almost surely, 2^40104614646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40104614646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45306506880).

40104614646 is an abundant number, since it is smaller than the sum of its proper divisors (50508399114).

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

40104614646 is a wasteful number, since it uses less digits than its factorization.

40104614646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19866 (or 19860 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 40104614646 in words is "forty billion, one hundred four million, six hundred fourteen thousand, six hundred forty-six".