72266748667 has 8 divisors (see below), whose sum is σ = 72623483856. Its totient is φ = 71910350592.

The previous prime is 72266748649. The next prime is 72266748703. The reversal of 72266748667 is 76684766227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72266748667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72266748607) 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, 351043 + ... + 517459.

It is an arithmetic number, because the mean of its divisors is an integer number (9077935482).

Almost surely, 2^72266748667 is an apocalyptic number.

72266748667 is a deficient number, since it is larger than the sum of its proper divisors (356735189).

72266748667 is a wasteful number, since it uses less digits than its factorization.

72266748667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168557.

The product of its digits is 56899584, while the sum is 61.

The spelling of 72266748667 in words is "seventy-two billion, two hundred sixty-six million, seven hundred forty-eight thousand, six hundred sixty-seven".