646708754043 has 12 divisors (see below), whose sum is σ = 1019056218648. Its totient is φ = 391944699360.

The previous prime is 646708754011. The next prime is 646708754051. The reversal of 646708754043 is 340457807646.

It is not a de Polignac number, because 646708754043 - 2⁵ = 646708754011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646708754053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3266205730 + ... + 3266205927.

It is an arithmetic number, because the mean of its divisors is an integer number (84921351554).

Almost surely, 2^646708754043 is an apocalyptic number.

646708754043 is a deficient number, since it is larger than the sum of its proper divisors (372347464605).

646708754043 is a wasteful number, since it uses less digits than its factorization.

646708754043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532411674 (or 6532411671 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 646708754043 in words is "six hundred forty-six billion, seven hundred eight million, seven hundred fifty-four thousand, forty-three".