645316693102 has 8 divisors (see below), whose sum is σ = 983843483112. Its totient is φ = 317368865400.

The previous prime is 645316693097. The next prime is 645316693123. The reversal of 645316693102 is 201396613546.

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

It is a super-2 number, since 2×645316693102² (a number of 24 digits) contains 22 as substring.

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, 2644740424 + ... + 2644740667.

It is an arithmetic number, because the mean of its divisors is an integer number (122980435389).

Almost surely, 2^645316693102 is an apocalyptic number.

645316693102 is a deficient number, since it is larger than the sum of its proper divisors (338526790010).

645316693102 is a wasteful number, since it uses less digits than its factorization.

645316693102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289481154.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 645316693102 in words is "six hundred forty-five billion, three hundred sixteen million, six hundred ninety-three thousand, one hundred two".