645312326212 has 12 divisors (see below), whose sum is σ = 1165725492736. Its totient is φ = 312247899720.

The previous prime is 645312326161. The next prime is 645312326233. The reversal of 645312326212 is 212623213546.

645312326212 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 2×645312326212² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 2602065708 + ... + 2602065955.

Almost surely, 2^645312326212 is an apocalyptic number.

645312326212 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

645312326212 is a deficient number, since it is larger than the sum of its proper divisors (520413166524).

645312326212 is a wasteful number, since it uses less digits than its factorization.

645312326212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204131698 (or 5204131696 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

Adding to 645312326212 its reverse (212623213546), we get a palindrome (857935539758).

The spelling of 645312326212 in words is "six hundred forty-five billion, three hundred twelve million, three hundred twenty-six thousand, two hundred twelve".