85469231540 has 48 divisors (see below), whose sum is σ = 223773992064. Its totient is φ = 26639760000.

The previous prime is 85469231513. The next prime is 85469231579. The reversal of 85469231540 is 4513296458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27748211 + ... + 27751290.

It is an arithmetic number, because the mean of its divisors is an integer number (4661958168).

Almost surely, 2^85469231540 is an apocalyptic number.

It is an amenable number.

85469231540 is an abundant number, since it is smaller than the sum of its proper divisors (138304760524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85469231540 is a wasteful number, since it uses less digits than its factorization.

85469231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55499528 (or 55499526 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 85469231540 in words is "eighty-five billion, four hundred sixty-nine million, two hundred thirty-one thousand, five hundred forty".