85622763497 has 2 divisors, whose sum is σ = 85622763498. Its totient is φ = 85622763496.

The previous prime is 85622763469. The next prime is 85622763511. The reversal of 85622763497 is 79436722658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84552426841 + 1070336656 = 290779^2 + 32716^2 .

It is a cyclic number.

It is not a de Polignac number, because 85622763497 - 2⁸ = 85622763241 is a prime.

It is not a weakly prime, because it can be changed into another prime (85622763797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42811381748 + 42811381749.

It is an arithmetic number, because the mean of its divisors is an integer number (42811381749).

Almost surely, 2^85622763497 is an apocalyptic number.

It is an amenable number.

85622763497 is a deficient number, since it is larger than the sum of its proper divisors (1).

85622763497 is an equidigital number, since it uses as much as digits as its factorization.

85622763497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 59.

The spelling of 85622763497 in words is "eighty-five billion, six hundred twenty-two million, seven hundred sixty-three thousand, four hundred ninety-seven".