85212052293 has 4 divisors (see below), whose sum is σ = 113616069728. Its totient is φ = 56808034860.

The previous prime is 85212052273. The next prime is 85212052319. The reversal of 85212052293 is 39225021258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85212052293 - 2¹⁸ = 85211790149 is a prime.

It is a super-2 number, since 2×85212052293² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85212052273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14202008713 + ... + 14202008718.

It is an arithmetic number, because the mean of its divisors is an integer number (28404017432).

Almost surely, 2^85212052293 is an apocalyptic number.

It is an amenable number.

85212052293 is a deficient number, since it is larger than the sum of its proper divisors (28404017435).

85212052293 is a wasteful number, since it uses less digits than its factorization.

85212052293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28404017434.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 85212052293 in words is "eighty-five billion, two hundred twelve million, fifty-two thousand, two hundred ninety-three".