72174321067 has 2 divisors, whose sum is σ = 72174321068. Its totient is φ = 72174321066.

The previous prime is 72174321061. The next prime is 72174321203. The reversal of 72174321067 is 76012347127.

It is a weak prime.

It is an emirp because it is prime and its reverse (76012347127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72174321067 - 2³ = 72174321059 is a prime.

It is not a weakly prime, because it can be changed into another prime (72174321061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36087160533 + 36087160534.

It is an arithmetic number, because the mean of its divisors is an integer number (36087160534).

Almost surely, 2^72174321067 is an apocalyptic number.

72174321067 is a deficient number, since it is larger than the sum of its proper divisors (1).

72174321067 is an equidigital number, since it uses as much as digits as its factorization.

72174321067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 72174321067 in words is "seventy-two billion, one hundred seventy-four million, three hundred twenty-one thousand, sixty-seven".