40784657859 has 24 divisors (see below), whose sum is σ = 64460944704. Its totient is φ = 24643278000.

The previous prime is 40784657843. The next prime is 40784657861. The reversal of 40784657859 is 95875648704.

40784657859 is a `hidden beast` number, since 4 + 0 + 7 + 8 + 4 + 6 + 578 + 59 = 666.

It is not a de Polignac number, because 40784657859 - 2⁴ = 40784657843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40784657796 and 40784657805.

It is not an unprimeable number, because it can be changed into a prime (40784657059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 589537 + ... + 655074.

It is an arithmetic number, because the mean of its divisors is an integer number (2685872696).

Almost surely, 2^40784657859 is an apocalyptic number.

40784657859 is a deficient number, since it is larger than the sum of its proper divisors (23676286845).

40784657859 is a wasteful number, since it uses less digits than its factorization.

40784657859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244959 (or 1244956 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 40784657859 in words is "forty billion, seven hundred eighty-four million, six hundred fifty-seven thousand, eight hundred fifty-nine".