72423667768 has 8 divisors (see below), whose sum is σ = 135794377080. Its totient is φ = 36211833880.

The previous prime is 72423667751. The next prime is 72423667859. The reversal of 72423667768 is 86776632427.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4526479228 + ... + 4526479243.

It is an arithmetic number, because the mean of its divisors is an integer number (16974297135).

Almost surely, 2^72423667768 is an apocalyptic number.

It is an amenable number.

72423667768 is a deficient number, since it is larger than the sum of its proper divisors (63370709312).

72423667768 is a wasteful number, since it uses less digits than its factorization.

72423667768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9052958477 (or 9052958473 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 58.

The spelling of 72423667768 in words is "seventy-two billion, four hundred twenty-three million, six hundred sixty-seven thousand, seven hundred sixty-eight".