72447977974427 has 8 divisors (see below), whose sum is σ = 79048349661360. Its totient is φ = 65849971599360.

The previous prime is 72447977974399. The next prime is 72447977974429.

72447977974427 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 72447977974427 - 2¹⁰ = 72447977973403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72447977974429) 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, 591263918 + ... + 591386435.

It is an arithmetic number, because the mean of its divisors is an integer number (9881043707670).

Almost surely, 2^{72447977974427} is an apocalyptic number.

72447977974427 is a deficient number, since it is larger than the sum of its proper divisors (6600371686933).

72447977974427 is a wasteful number, since it uses less digits than its factorization.

72447977974427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182655933.

The product of its digits is 9758278656, while the sum is 80.

The spelling of 72447977974427 in words is "seventy-two trillion, four hundred forty-seven billion, nine hundred seventy-seven million, nine hundred seventy-four thousand, four hundred twenty-seven".