214911556651 has 4 divisors (see below), whose sum is σ = 234448970904. Its totient is φ = 195374142400.

The previous prime is 214911556637. The next prime is 214911556661. The reversal of 214911556651 is 156655119412.

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 214911556651 - 2¹⁹ = 214911032363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214911556661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9768707110 + ... + 9768707131.

It is an arithmetic number, because the mean of its divisors is an integer number (58612242726).

Almost surely, 2^214911556651 is an apocalyptic number.

214911556651 is a deficient number, since it is larger than the sum of its proper divisors (19537414253).

214911556651 is a wasteful number, since it uses less digits than its factorization.

214911556651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19537414252.

The product of its digits is 324000, while the sum is 46.

The spelling of 214911556651 in words is "two hundred fourteen billion, nine hundred eleven million, five hundred fifty-six thousand, six hundred fifty-one".