85479497436 has 24 divisors (see below), whose sum is σ = 200346571264. Its totient is φ = 28365392880.

The previous prime is 85479497413. The next prime is 85479497449. The reversal of 85479497436 is 63479497458.

It is a super-2 number, since 2×85479497436² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15968830 + ... + 15974181.

Almost surely, 2^85479497436 is an apocalyptic number.

It is an amenable number.

85479497436 is an abundant number, since it is smaller than the sum of its proper divisors (114867073828).

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

85479497436 is a wasteful number, since it uses less digits than its factorization.

85479497436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31943241 (or 31943239 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 66.

The spelling of 85479497436 in words is "eighty-five billion, four hundred seventy-nine million, four hundred ninety-seven thousand, four hundred thirty-six".