72439693427 has 8 divisors (see below), whose sum is σ = 74941082400. Its totient is φ = 69938535744.

The previous prime is 72439693423. The next prime is 72439693439.

72439693427 is nontrivially palindromic in base 10.

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 72439693427 - 2² = 72439693423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72439693421) 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, 790583 + ... + 877439.

It is an arithmetic number, because the mean of its divisors is an integer number (9367635300).

Almost surely, 2^72439693427 is an apocalyptic number.

72439693427 is a deficient number, since it is larger than the sum of its proper divisors (2501388973).

72439693427 is a wasteful number, since it uses less digits than its factorization.

72439693427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115645.

The product of its digits is 13716864, while the sum is 56.

The spelling of 72439693427 in words is "seventy-two billion, four hundred thirty-nine million, six hundred ninety-three thousand, four hundred twenty-seven".