72974377723 has 8 divisors (see below), whose sum is σ = 80711786288. Its totient is φ = 65540397024.

The previous prime is 72974377643. The next prime is 72974377741. The reversal of 72974377723 is 32777347927.

It is a happy number.

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 72974377723 - 2¹⁷ = 72974246651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72978377723) 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, 75856461 + ... + 75857422.

It is an arithmetic number, because the mean of its divisors is an integer number (10088973286).

Almost surely, 2^72974377723 is an apocalyptic number.

72974377723 is a deficient number, since it is larger than the sum of its proper divisors (7737408565).

72974377723 is a wasteful number, since it uses less digits than its factorization.

72974377723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151713933.

The product of its digits is 21781872, while the sum is 58.

The spelling of 72974377723 in words is "seventy-two billion, nine hundred seventy-four million, three hundred seventy-seven thousand, seven hundred twenty-three".