85069831455 has 24 divisors (see below), whose sum is σ = 168519285792. Its totient is φ = 38889065664.

The previous prime is 85069831433. The next prime is 85069831463. The reversal of 85069831455 is 55413896058.

85069831455 is a `hidden beast` number, since 8 + 50 + 69 + 83 + 1 + 455 = 666.

It is not a de Polignac number, because 85069831455 - 2⁵ = 85069831423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135031164 + ... + 135031793.

It is an arithmetic number, because the mean of its divisors is an integer number (7021636908).

Almost surely, 2^85069831455 is an apocalyptic number.

85069831455 is a deficient number, since it is larger than the sum of its proper divisors (83449454337).

85069831455 is a wasteful number, since it uses less digits than its factorization.

85069831455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270062975 (or 270062972 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 85069831455 in words is "eighty-five billion, sixty-nine million, eight hundred thirty-one thousand, four hundred fifty-five".