40785406641 has 24 divisors (see below), whose sum is σ = 67344563520. Its totient is φ = 23300313696.

The previous prime is 40785406633. The next prime is 40785406663. The reversal of 40785406641 is 14660458704.

40785406641 is a `hidden beast` number, since 4 + 0 + 7 + 8 + 540 + 66 + 41 = 666.

It is not a de Polignac number, because 40785406641 - 2³ = 40785406633 is a prime.

It is a super-3 number, since 3×40785406641³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40785406691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191830 + ... + 344048.

It is an arithmetic number, because the mean of its divisors is an integer number (2806023480).

Almost surely, 2^40785406641 is an apocalyptic number.

It is an amenable number.

40785406641 is a deficient number, since it is larger than the sum of its proper divisors (26559156879).

40785406641 is a wasteful number, since it uses less digits than its factorization.

40785406641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156485 (or 156482 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 40785406641 in words is "forty billion, seven hundred eighty-five million, four hundred six thousand, six hundred forty-one".