85622763517 has 4 divisors (see below), whose sum is σ = 85644784060. Its totient is φ = 85600742976.

The previous prime is 85622763511. The next prime is 85622763559. The reversal of 85622763517 is 71536722658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71536722658 = 2 ⋅35768361329.

It can be written as a sum of positive squares in 2 ways, for example, as 55683728676 + 29939034841 = 235974^2 + 173029^2 .

It is a cyclic number.

It is not a de Polignac number, because 85622763517 - 2¹⁵ = 85622730749 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 (85622763511) 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, 11004438 + ... + 11012215.

It is an arithmetic number, because the mean of its divisors is an integer number (21411196015).

Almost surely, 2^85622763517 is an apocalyptic number.

It is an amenable number.

85622763517 is a deficient number, since it is larger than the sum of its proper divisors (22020543).

85622763517 is a wasteful number, since it uses less digits than its factorization.

85622763517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22020542.

The product of its digits is 4233600, while the sum is 52.

The spelling of 85622763517 in words is "eighty-five billion, six hundred twenty-two million, seven hundred sixty-three thousand, five hundred seventeen".