645341752074 has 16 divisors (see below), whose sum is σ = 1290824104608. Its totient is φ = 215090483952.

The previous prime is 645341752073. The next prime is 645341752103. The reversal of 645341752074 is 470257143546.

It is not an unprimeable number, because it can be changed into a prime (645341752073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5798637 + ... + 5908880.

It is an arithmetic number, because the mean of its divisors is an integer number (80676506538).

Almost surely, 2^645341752074 is an apocalyptic number.

645341752074 is an abundant number, since it is smaller than the sum of its proper divisors (645482352534).

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

645341752074 is a wasteful number, since it uses less digits than its factorization.

645341752074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11716709.

The product of its (nonzero) digits is 2822400, while the sum is 48.

The spelling of 645341752074 in words is "six hundred forty-five billion, three hundred forty-one million, seven hundred fifty-two thousand, seventy-four".