172051724051 has 2 divisors, whose sum is σ = 172051724052. Its totient is φ = 172051724050.

The previous prime is 172051724029. The next prime is 172051724057. The reversal of 172051724051 is 150427150271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172051724051 is a prime.

It is not a weakly prime, because it can be changed into another prime (172051724057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86025862025 + 86025862026.

It is an arithmetic number, because the mean of its divisors is an integer number (86025862026).

Almost surely, 2^172051724051 is an apocalyptic number.

172051724051 is a deficient number, since it is larger than the sum of its proper divisors (1).

172051724051 is an equidigital number, since it uses as much as digits as its factorization.

172051724051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19600, while the sum is 35.

The spelling of 172051724051 in words is "one hundred seventy-two billion, fifty-one million, seven hundred twenty-four thousand, fifty-one".