72969136384 has 27 divisors (see below), whose sum is σ = 145661864803. Its totient is φ = 36482407168.

The previous prime is 72969136349. The next prime is 72969136417. The reversal of 72969136384 is 48363196927.

It is a happy number.

The square root of 72969136384 is 270128.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4313607 + ... + 4330489.

Almost surely, 2^72969136384 is an apocalyptic number.

72969136384 is the 270128-th square number.

It is an amenable number.

72969136384 is a deficient number, since it is larger than the sum of its proper divisors (72692728419).

72969136384 is an frugal number, since it uses more digits than its factorization.

72969136384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33782 (or 16885 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 58.

The spelling of 72969136384 in words is "seventy-two billion, nine hundred sixty-nine million, one hundred thirty-six thousand, three hundred eighty-four".