645232606232546 has 16 divisors (see below), whose sum is σ = 976729586395200. Its totient is φ = 319656085490448.

The previous prime is 645232606232491. The next prime is 645232606232573.

645232606232546 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×645232606232546² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645232606232491 and 645232606232500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209249915 + ... + 212311073.

It is an arithmetic number, because the mean of its divisors is an integer number (61045599149700).

Almost surely, 2^{645232606232546} is an apocalyptic number.

645232606232546 is a deficient number, since it is larger than the sum of its proper divisors (331496980162654).

645232606232546 is a wasteful number, since it uses less digits than its factorization.

645232606232546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028153.

The product of its (nonzero) digits is 74649600, while the sum is 56.

The spelling of 645232606232546 in words is "six hundred forty-five trillion, two hundred thirty-two billion, six hundred six million, two hundred thirty-two thousand, five hundred forty-six".