72047274064 has 20 divisors (see below), whose sum is σ = 139760411904. Its totient is φ = 35980071008.

The previous prime is 72047274023. The next prime is 72047274077. The reversal of 72047274064 is 46047274027.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72047274064.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2709232 + ... + 2735695.

Almost surely, 2^72047274064 is an apocalyptic number.

It is an amenable number.

72047274064 is a deficient number, since it is larger than the sum of its proper divisors (67713137840).

72047274064 is a wasteful number, since it uses less digits than its factorization.

72047274064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445762 (or 5445756 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 43.

The spelling of 72047274064 in words is "seventy-two billion, forty-seven million, two hundred seventy-four thousand, sixty-four".