213265100430451 has 4 divisors (see below), whose sum is σ = 213265179959400. Its totient is φ = 213265020901504.

The previous prime is 213265100430391. The next prime is 213265100430497. The reversal of 213265100430451 is 154034001562312.

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

It is a cyclic number.

It is not a de Polignac number, because 213265100430451 - 2²¹ = 213265098333299 is a prime.

It is a super-2 number, since 2×213265100430451² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213265100430451.

It is not an unprimeable number, because it can be changed into a prime (213265100440451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35596441 + ... + 41153818.

It is an arithmetic number, because the mean of its divisors is an integer number (53316294989850).

Almost surely, 2^{213265100430451} is an apocalyptic number.

213265100430451 is a deficient number, since it is larger than the sum of its proper divisors (79528949).

213265100430451 is an equidigital number, since it uses as much as digits as its factorization.

213265100430451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79528948.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 213265100430451 its reverse (154034001562312), we get a palindrome (367299101992763).

The spelling of 213265100430451 in words is "two hundred thirteen trillion, two hundred sixty-five billion, one hundred million, four hundred thirty thousand, four hundred fifty-one".