172580352011 has 2 divisors, whose sum is σ = 172580352012. Its totient is φ = 172580352010.

The previous prime is 172580351989. The next prime is 172580352017. The reversal of 172580352011 is 110253085271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172580352011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (172580352017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86290176005 + 86290176006.

It is an arithmetic number, because the mean of its divisors is an integer number (86290176006).

Almost surely, 2^172580352011 is an apocalyptic number.

172580352011 is a deficient number, since it is larger than the sum of its proper divisors (1).

172580352011 is an equidigital number, since it uses as much as digits as its factorization.

172580352011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 172580352011 in words is "one hundred seventy-two billion, five hundred eighty million, three hundred fifty-two thousand, eleven".