84636773776 has 45 divisors (see below), whose sum is σ = 165208067841. Its totient is φ = 42004770816.

The previous prime is 84636773773. The next prime is 84636773777. The reversal of 84636773776 is 67737763648.

The square root of 84636773776 is 290924.

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., 83324595600 + 1312178176 = 288660^2 + 36224^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84636773773) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 299069731 + ... + 299070013.

Almost surely, 2^84636773776 is an apocalyptic number.

84636773776 is the 290924-th square number.

It is an amenable number.

84636773776 is a deficient number, since it is larger than the sum of its proper divisors (80571294065).

84636773776 is an frugal number, since it uses more digits than its factorization.

84636773776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 542 counting only the distinct ones).

The product of its digits is 149361408, while the sum is 64.

Multiplying 84636773776 by its sum of digits (64), we get a square (5416753521664 = 2327392²).

The spelling of 84636773776 in words is "eighty-four billion, six hundred thirty-six million, seven hundred seventy-three thousand, seven hundred seventy-six".