40265894646 has 24 divisors (see below), whose sum is σ = 92374700184. Its totient is φ = 12632437440.

The previous prime is 40265894639. The next prime is 40265894653. The reversal of 40265894646 is 64649856204.

40265894646 is a `hidden beast` number, since 40 + 2 + 65 + 89 + 464 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (40265894639) and next prime (40265894653).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40265894592 and 40265894601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65793640 + ... + 65794251.

It is an arithmetic number, because the mean of its divisors is an integer number (3848945841).

Almost surely, 2^40265894646 is an apocalyptic number.

40265894646 is an abundant number, since it is smaller than the sum of its proper divisors (52108805538).

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

40265894646 is a wasteful number, since it uses less digits than its factorization.

40265894646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131587916 (or 131587913 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 40265894646 in words is "forty billion, two hundred sixty-five million, eight hundred ninety-four thousand, six hundred forty-six".