72066787082 has 4 divisors (see below), whose sum is σ = 108100180626. Its totient is φ = 36033393540.

The previous prime is 72066787063. The next prime is 72066787097. The reversal of 72066787082 is 28078766027.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59991194761 + 12075592321 = 244931^2 + 109889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18016696769 + ... + 18016696772.

Almost surely, 2^72066787082 is an apocalyptic number.

72066787082 is a deficient number, since it is larger than the sum of its proper divisors (36033393544).

72066787082 is a wasteful number, since it uses less digits than its factorization.

72066787082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36033393543.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 72066787082 in words is "seventy-two billion, sixty-six million, seven hundred eighty-seven thousand, eighty-two".