65253847891 has 4 divisors (see below), whose sum is σ = 65259061192. Its totient is φ = 65248634592.

The previous prime is 65253847859. The next prime is 65253847963. The reversal of 65253847891 is 19874835256.

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 65253847891 - 2⁵ = 65253847859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65253847391) 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, 2587830 + ... + 2612923.

It is an arithmetic number, because the mean of its divisors is an integer number (16314765298).

Almost surely, 2^65253847891 is an apocalyptic number.

65253847891 is a deficient number, since it is larger than the sum of its proper divisors (5213301).

65253847891 is a wasteful number, since it uses less digits than its factorization.

65253847891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213300.

The product of its digits is 14515200, while the sum is 58.

The spelling of 65253847891 in words is "sixty-five billion, two hundred fifty-three million, eight hundred forty-seven thousand, eight hundred ninety-one".