72713769346 has 4 divisors (see below), whose sum is σ = 109070654022. Its totient is φ = 36356884672.

The previous prime is 72713769343. The next prime is 72713769361. The reversal of 72713769346 is 64396731727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64396731727 = 6029 ⋅10681163.

It can be written as a sum of positive squares in only one way, i.e., 70227650025 + 2486119321 = 265005^2 + 49861^2 .

It is not an unprimeable number, because it can be changed into a prime (72713769343) by changing a digit.

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 as a sum of consecutive naturals, namely, 18178442335 + ... + 18178442338.

Almost surely, 2^72713769346 is an apocalyptic number.

72713769346 is a deficient number, since it is larger than the sum of its proper divisors (36356884676).

72713769346 is a wasteful number, since it uses less digits than its factorization.

72713769346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36356884675.

The product of its digits is 8001504, while the sum is 55.

The spelling of 72713769346 in words is "seventy-two billion, seven hundred thirteen million, seven hundred sixty-nine thousand, three hundred forty-six".