85291564776 has 64 divisors (see below), whose sum is σ = 233006051520. Its totient is φ = 25802296320.

The previous prime is 85291564763. The next prime is 85291564777. The reversal of 85291564776 is 67746519258.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85291564777) 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, 115855 + ... + 428958.

It is an arithmetic number, because the mean of its divisors is an integer number (3640719555).

Almost surely, 2^85291564776 is an apocalyptic number.

It is an amenable number.

85291564776 is an abundant number, since it is smaller than the sum of its proper divisors (147714486744).

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

85291564776 is a wasteful number, since it uses less digits than its factorization.

85291564776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545426 (or 545422 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

The spelling of 85291564776 in words is "eighty-five billion, two hundred ninety-one million, five hundred sixty-four thousand, seven hundred seventy-six".