85209293379 has 24 divisors (see below), whose sum is σ = 133444496640. Its totient is φ = 48218287824.

The previous prime is 85209293371. The next prime is 85209293417. The reversal of 85209293379 is 97339290258.

It is not a de Polignac number, because 85209293379 - 2³ = 85209293371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85209293371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2798719 + ... + 2829000.

It is an arithmetic number, because the mean of its divisors is an integer number (5560187360).

Almost surely, 2^85209293379 is an apocalyptic number.

85209293379 is a deficient number, since it is larger than the sum of its proper divisors (48235203261).

85209293379 is a wasteful number, since it uses less digits than its factorization.

85209293379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627839 (or 5627832 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 85209293379 in words is "eighty-five billion, two hundred nine million, two hundred ninety-three thousand, three hundred seventy-nine".