213456652032551 has 4 divisors (see below), whose sum is σ = 220817226240600. Its totient is φ = 206096077824504.

The previous prime is 213456652032479. The next prime is 213456652032607. The reversal of 213456652032551 is 155230256654312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213456652032551 is a prime.

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 213456652032551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213456652034551) 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, 3680287103981 + ... + 3680287104038.

It is an arithmetic number, because the mean of its divisors is an integer number (55204306560150).

Almost surely, 2^{213456652032551} is an apocalyptic number.

213456652032551 is a deficient number, since it is larger than the sum of its proper divisors (7360574208049).

213456652032551 is an equidigital number, since it uses as much as digits as its factorization.

213456652032551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7360574208048.

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 213456652032551 in words is "two hundred thirteen trillion, four hundred fifty-six billion, six hundred fifty-two million, thirty-two thousand, five hundred fifty-one".