645415123014 has 12 divisors (see below), whose sum is σ = 1398399433236. Its totient is φ = 215138374332.

The previous prime is 645415122997. The next prime is 645415123039. The reversal of 645415123014 is 410321514546.

645415123014 is a `hidden beast` number, since 6 + 4 + 5 + 415 + 1 + 230 + 1 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 645415123014.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 17928197844 + ... + 17928197879.

It is an arithmetic number, because the mean of its divisors is an integer number (116533286103).

Almost surely, 2^645415123014 is an apocalyptic number.

645415123014 is an abundant number, since it is smaller than the sum of its proper divisors (752984310222).

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

645415123014 is a wasteful number, since it uses less digits than its factorization.

645415123014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35856395731 (or 35856395728 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 645415123014 in words is "six hundred forty-five billion, four hundred fifteen million, one hundred twenty-three thousand, fourteen".