645106405430 has 8 divisors (see below), whose sum is σ = 1161191529792. Its totient is φ = 258042562168.

The previous prime is 645106405417. The next prime is 645106405499. The reversal of 645106405430 is 34504601546.

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

It is a congruent 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, 32255320262 + ... + 32255320281.

It is an arithmetic number, because the mean of its divisors is an integer number (145148941224).

Almost surely, 2^645106405430 is an apocalyptic number.

645106405430 is a deficient number, since it is larger than the sum of its proper divisors (516085124362).

645106405430 is a wasteful number, since it uses less digits than its factorization.

645106405430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64510640550.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 645106405430 in words is "six hundred forty-five billion, one hundred six million, four hundred five thousand, four hundred thirty".