72143729293 has 8 divisors (see below), whose sum is σ = 73658958912. Its totient is φ = 70641395616.

The previous prime is 72143729237. The next prime is 72143729303. The reversal of 72143729293 is 39292734127.

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

It is a cyclic number.

It is not a de Polignac number, because 72143729293 - 2¹⁷ = 72143598221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72143729993) 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 in 7 ways as a sum of consecutive naturals, for example, 3212680 + ... + 3235057.

It is an arithmetic number, because the mean of its divisors is an integer number (9207369864).

Almost surely, 2^72143729293 is an apocalyptic number.

It is an amenable number.

72143729293 is a deficient number, since it is larger than the sum of its proper divisors (1515229619).

72143729293 is a wasteful number, since it uses less digits than its factorization.

72143729293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447971.

The product of its digits is 1143072, while the sum is 49.

The spelling of 72143729293 in words is "seventy-two billion, one hundred forty-three million, seven hundred twenty-nine thousand, two hundred ninety-three".