645195763410 has 64 divisors (see below), whose sum is σ = 1721112312960. Its totient is φ = 153459937280.

The previous prime is 645195763397. The next prime is 645195763423. The reversal of 645195763410 is 14367591546.

It is an interprime number because it is at equal distance from previous prime (645195763397) and next prime (645195763423).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18427215 + ... + 18462194.

It is an arithmetic number, because the mean of its divisors is an integer number (26892379890).

Almost surely, 2^645195763410 is an apocalyptic number.

645195763410 is an abundant number, since it is smaller than the sum of its proper divisors (1075916549550).

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

645195763410 is a wasteful number, since it uses less digits than its factorization.

645195763410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36889483.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 645195763410 in words is "six hundred forty-five billion, one hundred ninety-five million, seven hundred sixty-three thousand, four hundred ten".