40860020457 has 40 divisors (see below), whose sum is σ = 61761328200. Its totient is φ = 26918459136.

The previous prime is 40860020447. The next prime is 40860020459. The reversal of 40860020457 is 75402006804.

40860020457 is a `hidden beast` number, since 4 + 0 + 8 + 600 + 2 + 0 + 45 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17398665216 + 23461355241 = 131904^2 + 153171^2 .

It is not a de Polignac number, because 40860020457 - 2⁴ = 40860020441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40860020459) 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 39 ways as a sum of consecutive naturals, for example, 3428533 + ... + 3440429.

It is an arithmetic number, because the mean of its divisors is an integer number (1544033205).

Almost surely, 2^40860020457 is an apocalyptic number.

It is an amenable number.

40860020457 is a deficient number, since it is larger than the sum of its proper divisors (20901307743).

40860020457 is a wasteful number, since it uses less digits than its factorization.

40860020457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12407 (or 12398 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 40860020457 in words is "forty billion, eight hundred sixty million, twenty thousand, four hundred fifty-seven".