85346363881 has 3 divisors (see below), whose sum is σ = 85346656023. Its totient is φ = 85346071740.

The previous prime is 85346363849. The next prime is 85346363911. The reversal of 85346363881 is 18836364358.

The square root of 85346363881 is 292141.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 52010907481 + 33335456400 = 228059^2 + 182580^2 .

It is not a de Polignac number, because 85346363881 - 2⁵ = 85346363849 is a prime.

It is a super-2 number, since 2×85346363881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85346363821) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 146071 + ... + 438211.

It is an arithmetic number, because the mean of its divisors is an integer number (28448885341).

Almost surely, 2^85346363881 is an apocalyptic number.

85346363881 is the 292141-st square number.

85346363881 is the 146071-st centered octagonal number.

It is an amenable number.

85346363881 is a deficient number, since it is larger than the sum of its proper divisors (292142).

85346363881 is an frugal number, since it uses more digits than its factorization.

85346363881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584282 (or 292141 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 55.

The spelling of 85346363881 in words is "eighty-five billion, three hundred forty-six million, three hundred sixty-three thousand, eight hundred eighty-one".