40646506635 has 48 divisors (see below), whose sum is σ = 80963762880. Its totient is φ = 18478575360.

The previous prime is 40646506627. The next prime is 40646506699. The reversal of 40646506635 is 53660564604.

40646506635 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 6 + 5 + 0 + 6 + 635 = 666.

It is not a de Polignac number, because 40646506635 - 2³ = 40646506627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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, 299440 + ... + 413469.

It is an arithmetic number, because the mean of its divisors is an integer number (1686745060).

Almost surely, 2^40646506635 is an apocalyptic number.

40646506635 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40646506635 is a deficient number, since it is larger than the sum of its proper divisors (40317256245).

40646506635 is a wasteful number, since it uses less digits than its factorization.

40646506635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713108 (or 713105 counting only the distinct ones).

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

The spelling of 40646506635 in words is "forty billion, six hundred forty-six million, five hundred six thousand, six hundred thirty-five".