85464312878 has 32 divisors (see below), whose sum is σ = 150817888704. Its totient is φ = 35555231232.

The previous prime is 85464312821. The next prime is 85464312887. The reversal of 85464312878 is 87821346458.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33776 + ... + 414812.

It is an arithmetic number, because the mean of its divisors is an integer number (4713059022).

Almost surely, 2^85464312878 is an apocalyptic number.

85464312878 is a deficient number, since it is larger than the sum of its proper divisors (65353575826).

85464312878 is a wasteful number, since it uses less digits than its factorization.

85464312878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381516.

The product of its digits is 10321920, while the sum is 56.

The spelling of 85464312878 in words is "eighty-five billion, four hundred sixty-four million, three hundred twelve thousand, eight hundred seventy-eight".