72047391922 has 8 divisors (see below), whose sum is σ = 117895732272. Its totient is φ = 32748814500.

The previous prime is 72047391887. The next prime is 72047391947. The reversal of 72047391922 is 22919374027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637440704 + ... + 1637440747.

It is an arithmetic number, because the mean of its divisors is an integer number (14736966534).

Almost surely, 2^72047391922 is an apocalyptic number.

72047391922 is a deficient number, since it is larger than the sum of its proper divisors (45848340350).

72047391922 is a wasteful number, since it uses less digits than its factorization.

72047391922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274881464.

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 72047391922 in words is "seventy-two billion, forty-seven million, three hundred ninety-one thousand, nine hundred twenty-two".