85901493943 has 2 divisors, whose sum is σ = 85901493944. Its totient is φ = 85901493942.

The previous prime is 85901493919. The next prime is 85901493947. The reversal of 85901493943 is 34939410958.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85901493943 - 2⁵ = 85901493911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85901493947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42950746971 + 42950746972.

It is an arithmetic number, because the mean of its divisors is an integer number (42950746972).

Almost surely, 2^85901493943 is an apocalyptic number.

85901493943 is a deficient number, since it is larger than the sum of its proper divisors (1).

85901493943 is an equidigital number, since it uses as much as digits as its factorization.

85901493943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 85901493943 in words is "eighty-five billion, nine hundred one million, four hundred ninety-three thousand, nine hundred forty-three".