85280352784 has 45 divisors (see below), whose sum is σ = 181644566061. Its totient is φ = 38757956160.

The previous prime is 85280352767. The next prime is 85280352841. The reversal of 85280352784 is 48725308258.

The square root of 85280352784 is 292028.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1254576400 + 84025776384 = 35420^2 + 289872^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12845914 + ... + 12852550.

Almost surely, 2^85280352784 is an apocalyptic number.

85280352784 is the 292028-th square number.

It is an amenable number.

85280352784 is an abundant number, since it is smaller than the sum of its proper divisors (96364213277).

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

85280352784 is an frugal number, since it uses more digits than its factorization.

85280352784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13304 (or 6650 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 52.

The spelling of 85280352784 in words is "eighty-five billion, two hundred eighty million, three hundred fifty-two thousand, seven hundred eighty-four".