85510601558 has 4 divisors (see below), whose sum is σ = 128265902340. Its totient is φ = 42755300778.

The previous prime is 85510601551. The next prime is 85510601573.

85510601558 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×85510601558² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85510601551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21377650388 + ... + 21377650391.

It is an arithmetic number, because the mean of its divisors is an integer number (32066475585).

Almost surely, 2^85510601558 is an apocalyptic number.

85510601558 is a deficient number, since it is larger than the sum of its proper divisors (42755300782).

85510601558 is a wasteful number, since it uses less digits than its factorization.

85510601558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42755300781.

The product of its (nonzero) digits is 240000, while the sum is 44.

The spelling of 85510601558 in words is "eighty-five billion, five hundred ten million, six hundred one thousand, five hundred fifty-eight".