72402973243 has 8 divisors (see below), whose sum is σ = 72726334560. Its totient is φ = 72080323200.

The previous prime is 72402973241. The next prime is 72402973289. The reversal of 72402973243 is 34237920427.

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 72402973243 - 2¹ = 72402973241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72402973243.

It is not an unprimeable number, because it can be changed into a prime (72402973241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26746 + ... + 381472.

It is an arithmetic number, because the mean of its divisors is an integer number (9090791820).

Almost surely, 2^72402973243 is an apocalyptic number.

72402973243 is a deficient number, since it is larger than the sum of its proper divisors (323361317).

72402973243 is a wasteful number, since it uses less digits than its factorization.

72402973243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355637.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 72402973243 in words is "seventy-two billion, four hundred two million, nine hundred seventy-three thousand, two hundred forty-three".