645452251614 has 24 divisors (see below), whose sum is σ = 1416182158560. Its totient is φ = 212427322848.

The previous prime is 645452251607. The next prime is 645452251627. The reversal of 645452251614 is 416152254546.

645452251614 is a `hidden beast` number, since 6 + 4 + 5 + 4 + 5 + 2 + 25 + 1 + 614 = 666.

It is a super-2 number, since 2×645452251614² (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 645452251614.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226950847 + ... + 226953690.

It is an arithmetic number, because the mean of its divisors is an integer number (59007589940).

Almost surely, 2^645452251614 is an apocalyptic number.

645452251614 is an abundant number, since it is smaller than the sum of its proper divisors (770729906946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645452251614 is a wasteful number, since it uses less digits than its factorization.

645452251614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453904624 (or 453904621 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The spelling of 645452251614 in words is "six hundred forty-five billion, four hundred fifty-two million, two hundred fifty-one thousand, six hundred fourteen".