72204137149171 has 2 divisors, whose sum is σ = 72204137149172. Its totient is φ = 72204137149170.

The previous prime is 72204137149093. The next prime is 72204137149187. The reversal of 72204137149171 is 17194173140227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72204137149171 - 2⁷ = 72204137149043 is a prime.

It is not a weakly prime, because it can be changed into another prime (72204137140171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36102068574585 + 36102068574586.

It is an arithmetic number, because the mean of its divisors is an integer number (36102068574586).

Almost surely, 2^{72204137149171} is an apocalyptic number.

72204137149171 is a deficient number, since it is larger than the sum of its proper divisors (1).

72204137149171 is an equidigital number, since it uses as much as digits as its factorization.

72204137149171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 72204137149171 in words is "seventy-two trillion, two hundred four billion, one hundred thirty-seven million, one hundred forty-nine thousand, one hundred seventy-one".