214612664465 has 4 divisors (see below), whose sum is σ = 257535197364. Its totient is φ = 171690131568.

The previous prime is 214612664459. The next prime is 214612664491. The reversal of 214612664465 is 564466216412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 136834147921 + 77778516544 = 369911^2 + 278888^2 .

It is a cyclic number.

It is not a de Polignac number, because 214612664465 - 2¹² = 214612660369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21461266442 + ... + 21461266451.

It is an arithmetic number, because the mean of its divisors is an integer number (64383799341).

Almost surely, 2^214612664465 is an apocalyptic number.

It is an amenable number.

214612664465 is a deficient number, since it is larger than the sum of its proper divisors (42922532899).

214612664465 is an equidigital number, since it uses as much as digits as its factorization.

214612664465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42922532898.

The product of its digits is 1658880, while the sum is 47.

The spelling of 214612664465 in words is "two hundred fourteen billion, six hundred twelve million, six hundred sixty-four thousand, four hundred sixty-five".