645236442214 has 32 divisors (see below), whose sum is σ = 1193194598400. Its totient is φ = 254832188832.

The previous prime is 645236442209. The next prime is 645236442217. The reversal of 645236442214 is 412244632546.

It is a super-2 number, since 2×645236442214² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645236442217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2850294 + ... + 3068329.

It is an arithmetic number, because the mean of its divisors is an integer number (37287331200).

Almost surely, 2^645236442214 is an apocalyptic number.

645236442214 is a deficient number, since it is larger than the sum of its proper divisors (547958156186).

645236442214 is a wasteful number, since it uses less digits than its factorization.

645236442214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919244.

The product of its digits is 1105920, while the sum is 43.

The spelling of 645236442214 in words is "six hundred forty-five billion, two hundred thirty-six million, four hundred forty-two thousand, two hundred fourteen".