645205610486 has 16 divisors (see below), whose sum is σ = 969512544000. Its totient is φ = 322034861928.

The previous prime is 645205610459. The next prime is 645205610503. The reversal of 645205610486 is 684016502546.

645205610486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×645205610486² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645205610486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19773461 + ... + 19806063.

It is an arithmetic number, because the mean of its divisors is an integer number (60594534000).

Almost surely, 2^645205610486 is an apocalyptic number.

645205610486 is a deficient number, since it is larger than the sum of its proper divisors (324306933514).

645205610486 is a wasteful number, since it uses less digits than its factorization.

645205610486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49723.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 645205610486 in words is "six hundred forty-five billion, two hundred five million, six hundred ten thousand, four hundred eighty-six".