2645234473234 has 4 divisors (see below), whose sum is σ = 3967851709854. Its totient is φ = 1322617236616.

The previous prime is 2645234473187. The next prime is 2645234473261. The reversal of 2645234473234 is 4323744325462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2438984975625 + 206249497609 = 1561725^2 + 454147^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 661308618307 + ... + 661308618310.

Almost surely, 2^{2645234473234} is an apocalyptic number.

2645234473234 is a deficient number, since it is larger than the sum of its proper divisors (1322617236620).

2645234473234 is a wasteful number, since it uses less digits than its factorization.

2645234473234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322617236619.

The product of its digits is 11612160, while the sum is 49.

Adding to 2645234473234 its reverse (4323744325462), we get a palindrome (6968978798696).

The spelling of 2645234473234 in words is "two trillion, six hundred forty-five billion, two hundred thirty-four million, four hundred seventy-three thousand, two hundred thirty-four".