18069811776 has 105 divisors (see below), whose sum is σ = 53593288419. Its totient is φ = 6020044416.

The previous prime is 18069811769. The next prime is 18069811789. The reversal of 18069811776 is 67711896081.

The square root of 18069811776 is 134424.

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

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9677595 + ... + 9679461.

Almost surely, 2^18069811776 is an apocalyptic number.

18069811776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18069811776 is the 134424-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18069811776

18069811776 is an abundant number, since it is smaller than the sum of its proper divisors (35523476643).

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

18069811776 is an frugal number, since it uses more digits than its factorization.

18069811776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 18069811776 in words is "eighteen billion, sixty-nine million, eight hundred eleven thousand, seven hundred seventy-six".