85731022605 has 16 divisors (see below), whose sum is σ = 140876924544. Its totient is φ = 44487449280.

The previous prime is 85731022529. The next prime is 85731022681. The reversal of 85731022605 is 50622013758.

It is an interprime number because it is at equal distance from previous prime (85731022529) and next prime (85731022681).

It is not a de Polignac number, because 85731022605 - 2¹⁰ = 85731021581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77234601 + ... + 77235710.

It is an arithmetic number, because the mean of its divisors is an integer number (8804807784).

Almost surely, 2^85731022605 is an apocalyptic number.

It is an amenable number.

85731022605 is a deficient number, since it is larger than the sum of its proper divisors (55145901939).

85731022605 is a wasteful number, since it uses less digits than its factorization.

85731022605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154470356.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 85731022605 in words is "eighty-five billion, seven hundred thirty-one million, twenty-two thousand, six hundred five".