85389368251 has 4 divisors (see below), whose sum is σ = 93152038104. Its totient is φ = 77626698400.

The previous prime is 85389368213. The next prime is 85389368257. The reversal of 85389368251 is 15286398358.

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 85389368251 - 2⁷ = 85389368123 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85389368257) 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, 3881334910 + ... + 3881334931.

It is an arithmetic number, because the mean of its divisors is an integer number (23288009526).

Almost surely, 2^85389368251 is an apocalyptic number.

85389368251 is a deficient number, since it is larger than the sum of its proper divisors (7762669853).

85389368251 is a wasteful number, since it uses less digits than its factorization.

85389368251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762669852.

The product of its digits is 12441600, while the sum is 58.

The spelling of 85389368251 in words is "eighty-five billion, three hundred eighty-nine million, three hundred sixty-eight thousand, two hundred fifty-one".