40663610208 has 72 divisors (see below), whose sum is σ = 124532317728. Its totient is φ = 12511878912.

The previous prime is 40663610203. The next prime is 40663610227. The reversal of 40663610208 is 80201636604.

40663610208 is a `hidden beast` number, since 4 + 0 + 6 + 636 + 10 + 2 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40663610203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5426760 + ... + 5434247.

It is an arithmetic number, because the mean of its divisors is an integer number (1729615524).

Almost surely, 2^40663610208 is an apocalyptic number.

40663610208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40663610208 is an abundant number, since it is smaller than the sum of its proper divisors (83868707520).

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

40663610208 is a wasteful number, since it uses less digits than its factorization.

40663610208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861036 (or 10861025 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 40663610208 in words is "forty billion, six hundred sixty-three million, six hundred ten thousand, two hundred eight".