72723658327 has 2 divisors, whose sum is σ = 72723658328. Its totient is φ = 72723658326.

The previous prime is 72723658309. The next prime is 72723658387. The reversal of 72723658327 is 72385632727.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72385632727) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72723658327 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72723658307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36361829163 + 36361829164.

It is an arithmetic number, because the mean of its divisors is an integer number (36361829164).

Almost surely, 2^72723658327 is an apocalyptic number.

72723658327 is a deficient number, since it is larger than the sum of its proper divisors (1).

72723658327 is an equidigital number, since it uses as much as digits as its factorization.

72723658327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 52.

The spelling of 72723658327 in words is "seventy-two billion, seven hundred twenty-three million, six hundred fifty-eight thousand, three hundred twenty-seven".