213514532551 has 2 divisors, whose sum is σ = 213514532552. Its totient is φ = 213514532550.

The previous prime is 213514532549. The next prime is 213514532593. The reversal of 213514532551 is 155235415312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213514532551 - 2¹ = 213514532549 is a prime.

It is a super-2 number, since 2×213514532551² (a number of 23 digits) contains 22 as substring.

Together with 213514532549, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 213514532551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213514532251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106757266275 + 106757266276.

It is an arithmetic number, because the mean of its divisors is an integer number (106757266276).

Almost surely, 2^213514532551 is an apocalyptic number.

213514532551 is a deficient number, since it is larger than the sum of its proper divisors (1).

213514532551 is an equidigital number, since it uses as much as digits as its factorization.

213514532551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 37.

Adding to 213514532551 its reverse (155235415312), we get a palindrome (368749947863).

The spelling of 213514532551 in words is "two hundred thirteen billion, five hundred fourteen million, five hundred thirty-two thousand, five hundred fifty-one".