72923770688 has 14 divisors (see below), whose sum is σ = 144708107586. Its totient is φ = 36461885312.

The previous prime is 72923770687. The next prime is 72923770723. The reversal of 72923770688 is 88607732927.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48590266624 + 24333504064 = 220432^2 + 155992^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72923770681) by changing a digit.

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, 569716895 + ... + 569717022.

It is an arithmetic number, because the mean of its divisors is an integer number (10336293399).

Almost surely, 2^72923770688 is an apocalyptic number.

It is an amenable number.

72923770688 is a deficient number, since it is larger than the sum of its proper divisors (71784336898).

72923770688 is a wasteful number, since it uses less digits than its factorization.

72923770688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139433929 (or 1139433919 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 72923770688 in words is "seventy-two billion, nine hundred twenty-three million, seven hundred seventy thousand, six hundred eighty-eight".