85799624297 has 2 divisors, whose sum is σ = 85799624298. Its totient is φ = 85799624296.

The previous prime is 85799624263. The next prime is 85799624299. The reversal of 85799624297 is 79242699758.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79228738576 + 6570885721 = 281476^2 + 81061^2 .

It is a cyclic number.

It is not a de Polignac number, because 85799624297 - 2¹² = 85799620201 is a prime.

Together with 85799624299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85799624299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42899812148 + 42899812149.

It is an arithmetic number, because the mean of its divisors is an integer number (42899812149).

Almost surely, 2^85799624297 is an apocalyptic number.

It is an amenable number.

85799624297 is a deficient number, since it is larger than the sum of its proper divisors (1).

85799624297 is an equidigital number, since it uses as much as digits as its factorization.

85799624297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137168640, while the sum is 68.

The spelling of 85799624297 in words is "eighty-five billion, seven hundred ninety-nine million, six hundred twenty-four thousand, two hundred ninety-seven".