85623527519 has 4 divisors (see below), whose sum is σ = 85714520520. Its totient is φ = 85532534520.

The previous prime is 85623527497. The next prime is 85623527527. The reversal of 85623527519 is 91572532658.

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

It is a cyclic number.

It is not a de Polignac number, because 85623527519 - 2³² = 81328560223 is a prime.

It is a super-2 number, since 2×85623527519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85623527419) 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, 45495089 + ... + 45496970.

It is an arithmetic number, because the mean of its divisors is an integer number (21428630130).

Almost surely, 2^85623527519 is an apocalyptic number.

85623527519 is a deficient number, since it is larger than the sum of its proper divisors (90993001).

85623527519 is an equidigital number, since it uses as much as digits as its factorization.

85623527519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90993000.

The product of its digits is 4536000, while the sum is 53.

The spelling of 85623527519 in words is "eighty-five billion, six hundred twenty-three million, five hundred twenty-seven thousand, five hundred nineteen".