85557980159 has 4 divisors (see below), whose sum is σ = 85610246904. Its totient is φ = 85505713416.

The previous prime is 85557980119. The next prime is 85557980219. The reversal of 85557980159 is 95108975558.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85557980159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85557980119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26130917 + ... + 26134190.

It is an arithmetic number, because the mean of its divisors is an integer number (21402561726).

Almost surely, 2^85557980159 is an apocalyptic number.

85557980159 is a deficient number, since it is larger than the sum of its proper divisors (52266745).

85557980159 is a wasteful number, since it uses less digits than its factorization.

85557980159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52266744.

The product of its (nonzero) digits is 22680000, while the sum is 62.

The spelling of 85557980159 in words is "eighty-five billion, five hundred fifty-seven million, nine hundred eighty thousand, one hundred fifty-nine".