645613514355 has 16 divisors (see below), whose sum is σ = 1034741401344. Its totient is φ = 343740614880.

The previous prime is 645613514311. The next prime is 645613514417. The reversal of 645613514355 is 553415316546.

It is not a de Polignac number, because 645613514355 - 2¹² = 645613510259 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 36652951 + ... + 36670560.

It is an arithmetic number, because the mean of its divisors is an integer number (64671337584).

Almost surely, 2^645613514355 is an apocalyptic number.

645613514355 is a deficient number, since it is larger than the sum of its proper divisors (389127886989).

645613514355 is a wasteful number, since it uses less digits than its factorization.

645613514355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73324106.

The product of its digits is 3240000, while the sum is 48.

The spelling of 645613514355 in words is "six hundred forty-five billion, six hundred thirteen million, five hundred fourteen thousand, three hundred fifty-five".