65230800891 has 4 divisors (see below), whose sum is σ = 86974401192. Its totient is φ = 43487200592.

The previous prime is 65230800847. The next prime is 65230800989. The reversal of 65230800891 is 19800803256.

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 65230800891 - 2⁷ = 65230800763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65230800841) 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, 10871800146 + ... + 10871800151.

It is an arithmetic number, because the mean of its divisors is an integer number (21743600298).

Almost surely, 2^65230800891 is an apocalyptic number.

65230800891 is a deficient number, since it is larger than the sum of its proper divisors (21743600301).

65230800891 is a wasteful number, since it uses less digits than its factorization.

65230800891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21743600300.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 65230800891 in words is "sixty-five billion, two hundred thirty million, eight hundred thousand, eight hundred ninety-one".