85407847771 has 16 divisors (see below), whose sum is σ = 89467934400. Its totient is φ = 81424634368.

The previous prime is 85407847757. The next prime is 85407847781. The reversal of 85407847771 is 17774870458.

It is a cyclic number.

It is not a de Polignac number, because 85407847771 - 2¹⁹ = 85407323483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85407847751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1895415 + ... + 1939951.

It is an arithmetic number, because the mean of its divisors is an integer number (5591745900).

Almost surely, 2^85407847771 is an apocalyptic number.

85407847771 is a deficient number, since it is larger than the sum of its proper divisors (4060086629).

85407847771 is a wasteful number, since it uses less digits than its factorization.

85407847771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45398.

The product of its (nonzero) digits is 12293120, while the sum is 58.

The spelling of 85407847771 in words is "eighty-five billion, four hundred seven million, eight hundred forty-seven thousand, seven hundred seventy-one".