85390078797 has 8 divisors (see below), whose sum is σ = 126503820480. Its totient is φ = 56926719180.

The previous prime is 85390078757. The next prime is 85390078799. The reversal of 85390078797 is 79787009358.

85390078797 is a `hidden beast` number, since 8 + 539 + 0 + 0 + 7 + 8 + 7 + 97 = 666.

It is not a de Polignac number, because 85390078797 - 2¹² = 85390074701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85390078799) 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 7 ways as a sum of consecutive naturals, for example, 1581297729 + ... + 1581297782.

It is an arithmetic number, because the mean of its divisors is an integer number (15812977560).

Almost surely, 2^85390078797 is an apocalyptic number.

It is an amenable number.

85390078797 is a deficient number, since it is larger than the sum of its proper divisors (41113741683).

85390078797 is a wasteful number, since it uses less digits than its factorization.

85390078797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162595520 (or 3162595514 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 85390078797 in words is "eighty-five billion, three hundred ninety million, seventy-eight thousand, seven hundred ninety-seven".