645045041145 has 32 divisors (see below), whose sum is σ = 1042613874432. Its totient is φ = 340513431552.

The previous prime is 645045041111. The next prime is 645045041159. The reversal of 645045041145 is 541140540546.

It is not a de Polignac number, because 645045041145 - 2³⁸ = 370167134201 is a prime.

It is a super-2 number, since 2×645045041145² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3012769 + ... + 3219761.

It is an arithmetic number, because the mean of its divisors is an integer number (32581683576).

Almost surely, 2^645045041145 is an apocalyptic number.

It is an amenable number.

645045041145 is a deficient number, since it is larger than the sum of its proper divisors (397568833287).

645045041145 is a wasteful number, since it uses less digits than its factorization.

645045041145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209121.

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 645045041145 in words is "six hundred forty-five billion, forty-five million, forty-one thousand, one hundred forty-five".