85905207078 has 16 divisors (see below), whose sum is σ = 172198253376. Its totient is φ = 28570429160.

The previous prime is 85905206999. The next prime is 85905207079. The reversal of 85905207078 is 87070250958.

It is a super-2 number, since 2×85905207078² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85905207078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85905207079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16157088 + ... + 16162403.

It is an arithmetic number, because the mean of its divisors is an integer number (10762390836).

Almost surely, 2^85905207078 is an apocalyptic number.

85905207078 is an abundant number, since it is smaller than the sum of its proper divisors (86293046298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85905207078 is a wasteful number, since it uses less digits than its factorization.

85905207078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32319939.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 85905207078 in words is "eighty-five billion, nine hundred five million, two hundred seven thousand, seventy-eight".