40046635566 has 96 divisors (see below), whose sum is σ = 99647428608. Its totient is φ = 11386172160.

The previous prime is 40046635549. The next prime is 40046635567. The reversal of 40046635566 is 66553664004.

40046635566 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 6 + 635 + 5 + 6 + 6 = 666.

It is a super-2 number, since 2×40046635566² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40046635567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40738711 + ... + 40739693.

It is an arithmetic number, because the mean of its divisors is an integer number (1037994048).

Almost surely, 2^40046635566 is an apocalyptic number.

40046635566 is an abundant number, since it is smaller than the sum of its proper divisors (59600793042).

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

40046635566 is a wasteful number, since it uses less digits than its factorization.

40046635566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 40046635566 in words is "forty billion, forty-six million, six hundred thirty-five thousand, five hundred sixty-six".