15214964689 has 4 divisors (see below), whose sum is σ = 15217620660. Its totient is φ = 15212308720.

The previous prime is 15214964621. The next prime is 15214964707. The reversal of 15214964689 is 98646941251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98646941251 = 302833 ⋅325747.

It can be written as a sum of positive squares in 2 ways, for example, as 12300584464 + 2914380225 = 110908^2 + 53985^2 .

It is a cyclic number.

It is not a de Polignac number, because 15214964689 - 2¹¹ = 15214962641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15214964389) 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, 1319374 + ... + 1330855.

It is an arithmetic number, because the mean of its divisors is an integer number (3804405165).

Almost surely, 2^15214964689 is an apocalyptic number.

It is an amenable number.

15214964689 is a deficient number, since it is larger than the sum of its proper divisors (2655971).

15214964689 is an equidigital number, since it uses as much as digits as its factorization.

15214964689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655970.

The product of its digits is 3732480, while the sum is 55.

The spelling of 15214964689 in words is "fifteen billion, two hundred fourteen million, nine hundred sixty-four thousand, six hundred eighty-nine".