85811260380405 has 48 divisors (see below), whose sum is σ = 161179285703040. Its totient is φ = 38868114757248.

The previous prime is 85811260380383. The next prime is 85811260380407. The reversal of 85811260380405 is 50408306211858.

It is not a de Polignac number, because 85811260380405 - 2³³ = 85802670445813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85811260380407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 535470409 + ... + 535630638.

It is an arithmetic number, because the mean of its divisors is an integer number (3357901785480).

Almost surely, 2^{85811260380405} is an apocalyptic number.

It is an amenable number.

85811260380405 is a deficient number, since it is larger than the sum of its proper divisors (75368025322635).

85811260380405 is a wasteful number, since it uses less digits than its factorization.

85811260380405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071101178 (or 1071101171 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 51.

The spelling of 85811260380405 in words is "eighty-five trillion, eight hundred eleven billion, two hundred sixty million, three hundred eighty thousand, four hundred five".