645310013546 has 8 divisors (see below), whose sum is σ = 1055961840384. Its totient is φ = 293322733420.

The previous prime is 645310013521. The next prime is 645310013561.

645310013546 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14666136650 + ... + 14666136693.

It is an arithmetic number, because the mean of its divisors is an integer number (131995230048).

Almost surely, 2^645310013546 is an apocalyptic number.

645310013546 is a deficient number, since it is larger than the sum of its proper divisors (410651826838).

645310013546 is a wasteful number, since it uses less digits than its factorization.

645310013546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29332273356.

The product of its (nonzero) digits is 129600, while the sum is 38.

It can be divided in two parts, 6453100 and 13546, that added together give a palindrome (6466646).

The spelling of 645310013546 in words is "six hundred forty-five billion, three hundred ten million, thirteen thousand, five hundred forty-six".