85922603509 has 4 divisors (see below), whose sum is σ = 85924998316. Its totient is φ = 85920208704.

The previous prime is 85922603489. The next prime is 85922603519. The reversal of 85922603509 is 90530622958.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69750394609 + 16172208900 = 264103^2 + 127170^2 .

It is a cyclic number.

It is not a de Polignac number, because 85922603509 - 2⁷ = 85922603381 is a prime.

It is a super-2 number, since 2×85922603509² (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 (85922603519) 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, 1142754 + ... + 1215619.

It is an arithmetic number, because the mean of its divisors is an integer number (21481249579).

Almost surely, 2^85922603509 is an apocalyptic number.

It is an amenable number.

85922603509 is a deficient number, since it is larger than the sum of its proper divisors (2394807).

85922603509 is a wasteful number, since it uses less digits than its factorization.

85922603509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394806.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 85922603509 in words is "eighty-five billion, nine hundred twenty-two million, six hundred three thousand, five hundred nine".