85294662992641 has 2 divisors, whose sum is σ = 85294662992642. Its totient is φ = 85294662992640.

The previous prime is 85294662992639. The next prime is 85294662992657. The reversal of 85294662992641 is 14629926649258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49732523432641 + 35562139560000 = 7052129^2 + 5963400^2 .

It is a cyclic number.

It is not a de Polignac number, because 85294662992641 - 2¹ = 85294662992639 is a prime.

Together with 85294662992639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85294662992141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42647331496320 + 42647331496321.

It is an arithmetic number, because the mean of its divisors is an integer number (42647331496321).

Almost surely, 2^{85294662992641} is an apocalyptic number.

It is an amenable number.

85294662992641 is a deficient number, since it is larger than the sum of its proper divisors (1).

85294662992641 is an equidigital number, since it uses as much as digits as its factorization.

85294662992641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806215680, while the sum is 73.

The spelling of 85294662992641 in words is "eighty-five trillion, two hundred ninety-four billion, six hundred sixty-two million, nine hundred ninety-two thousand, six hundred forty-one".