72722370427 has 32 divisors (see below), whose sum is σ = 89556045824. Its totient is φ = 57729801600.

The previous prime is 72722370407. The next prime is 72722370451. The reversal of 72722370427 is 72407322727.

It is a cyclic number.

It is not a de Polignac number, because 72722370427 - 2³¹ = 70574886779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72722370407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 415528 + ... + 564010.

It is an arithmetic number, because the mean of its divisors is an integer number (2798626432).

Almost surely, 2^72722370427 is an apocalyptic number.

72722370427 is a deficient number, since it is larger than the sum of its proper divisors (16833675397).

72722370427 is a wasteful number, since it uses less digits than its factorization.

72722370427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148619.

The product of its (nonzero) digits is 460992, while the sum is 43.

The spelling of 72722370427 in words is "seventy-two billion, seven hundred twenty-two million, three hundred seventy thousand, four hundred twenty-seven".