645416614546 has 32 divisors (see below), whose sum is σ = 1061681981760. Its totient is φ = 291832896000.

The previous prime is 645416614529. The next prime is 645416614547.

645416614546 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×645416614546² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645416614493 and 645416614502.

It is not an unprimeable number, because it can be changed into a prime (645416614547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5943990 + ... + 6051598.

It is an arithmetic number, because the mean of its divisors is an integer number (33177561930).

Almost surely, 2^645416614546 is an apocalyptic number.

645416614546 is a deficient number, since it is larger than the sum of its proper divisors (416265367214).

645416614546 is a wasteful number, since it uses less digits than its factorization.

645416614546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109050.

The product of its digits is 8294400, while the sum is 52.

The spelling of 645416614546 in words is "six hundred forty-five billion, four hundred sixteen million, six hundred fourteen thousand, five hundred forty-six".