645943487298 has 8 divisors (see below), whose sum is σ = 1291886974608. Its totient is φ = 215314495764.

The previous prime is 645943487269. The next prime is 645943487303. The reversal of 645943487298 is 892784349546.

645943487298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

645943487298 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53828623936 + ... + 53828623947.

It is an arithmetic number, because the mean of its divisors is an integer number (161485871826).

Almost surely, 2^645943487298 is an apocalyptic number.

645943487298 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

645943487298 is a wasteful number, since it uses less digits than its factorization.

645943487298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107657247888.

The product of its digits is 418037760, while the sum is 69.

The spelling of 645943487298 in words is "six hundred forty-five billion, nine hundred forty-three million, four hundred eighty-seven thousand, two hundred ninety-eight".