72454445427 has 16 divisors (see below), whose sum is σ = 118899603200. Its totient is φ = 38217729312.

The previous prime is 72454445387. The next prime is 72454445461.

It is a happy number.

72454445427 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 72454445427 - 2¹⁴ = 72454429043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72454445467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132700177 + ... + 132700722.

It is an arithmetic number, because the mean of its divisors is an integer number (7431225200).

Almost surely, 2^72454445427 is an apocalyptic number.

72454445427 is a deficient number, since it is larger than the sum of its proper divisors (46445157773).

72454445427 is a wasteful number, since it uses less digits than its factorization.

72454445427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265400922.

The product of its digits is 5017600, while the sum is 48.

The spelling of 72454445427 in words is "seventy-two billion, four hundred fifty-four million, four hundred forty-five thousand, four hundred twenty-seven".