816069703456 has 108 divisors (see below), whose sum is σ = 1972489394358. Its totient is φ = 331336341504.

The previous prime is 816069703403. The next prime is 816069703457. The reversal of 816069703456 is 654307960618.

It can be written as a sum of positive squares in only one way, i.e., 451471111056 + 364598592400 = 671916^2 + 603820^2 .

It is a junction number, because it is equal to n+sod(n) for n = 816069703397 and 816069703406.

It is not an unprimeable number, because it can be changed into a prime (816069703457) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 154801 + ... + 1286896.

Almost surely, 2^816069703456 is an apocalyptic number.

It is an amenable number.

816069703456 is an abundant number, since it is smaller than the sum of its proper divisors (1156419690902).

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

816069703456 is a wasteful number, since it uses less digits than its factorization.

816069703456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441759 (or 1441725 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 816069703456 in words is "eight hundred sixteen billion, sixty-nine million, seven hundred three thousand, four hundred fifty-six".