85777830500 has 24 divisors (see below), whose sum is σ = 187338782904. Its totient is φ = 34311132000.

The previous prime is 85777830449. The next prime is 85777830547. The reversal of 85777830500 is 503877758.

It can be written as a sum of positive squares in 4 ways, for example, as 1097994496 + 84679836004 = 33136^2 + 290998^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85777331 + ... + 85778330.

It is an arithmetic number, because the mean of its divisors is an integer number (7805782621).

Almost surely, 2^85777830500 is an apocalyptic number.

It is an amenable number.

85777830500 is an abundant number, since it is smaller than the sum of its proper divisors (101560952404).

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

85777830500 is a wasteful number, since it uses less digits than its factorization.

85777830500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171555680 (or 171555668 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 85777830500 in words is "eighty-five billion, seven hundred seventy-seven million, eight hundred thirty thousand, five hundred".