213516274354 has 4 divisors (see below), whose sum is σ = 320274411534. Its totient is φ = 106758137176.

The previous prime is 213516274333. The next prime is 213516274421. The reversal of 213516274354 is 453472615312.

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., 213513305625 + 2968729 = 462075^2 + 1723^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213516274354.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53379068587 + ... + 53379068590.

Almost surely, 2^213516274354 is an apocalyptic number.

213516274354 is a deficient number, since it is larger than the sum of its proper divisors (106758137180).

213516274354 is a wasteful number, since it uses less digits than its factorization.

213516274354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106758137179.

The product of its digits is 604800, while the sum is 43.

Adding to 213516274354 its reverse (453472615312), we get a palindrome (666988889666).

The spelling of 213516274354 in words is "two hundred thirteen billion, five hundred sixteen million, two hundred seventy-four thousand, three hundred fifty-four".