85266586262731 has 2 divisors, whose sum is σ = 85266586262732. Its totient is φ = 85266586262730.

The previous prime is 85266586262657. The next prime is 85266586262743. The reversal of 85266586262731 is 13726268566258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85266586262731 - 2¹⁹ = 85266585738443 is a prime.

It is a super-2 number, since 2×85266586262731² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85266586263731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42633293131365 + 42633293131366.

It is an arithmetic number, because the mean of its divisors is an integer number (42633293131366).

Almost surely, 2^{85266586262731} is an apocalyptic number.

85266586262731 is a deficient number, since it is larger than the sum of its proper divisors (1).

85266586262731 is an equidigital number, since it uses as much as digits as its factorization.

85266586262731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 348364800, while the sum is 67.

The spelling of 85266586262731 in words is "eighty-five trillion, two hundred sixty-six billion, five hundred eighty-six million, two hundred sixty-two thousand, seven hundred thirty-one".