172764247492087 has 2 divisors, whose sum is σ = 172764247492088. Its totient is φ = 172764247492086.

The previous prime is 172764247492069. The next prime is 172764247492091. The reversal of 172764247492087 is 780294742467271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172764247492087 - 2¹¹ = 172764247490039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172764247492987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86382123746043 + 86382123746044.

It is an arithmetic number, because the mean of its divisors is an integer number (86382123746044).

Almost surely, 2^{172764247492087} is an apocalyptic number.

172764247492087 is a deficient number, since it is larger than the sum of its proper divisors (1).

172764247492087 is an equidigital number, since it uses as much as digits as its factorization.

172764247492087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 531062784, while the sum is 70.

The spelling of 172764247492087 in words is "one hundred seventy-two trillion, seven hundred sixty-four billion, two hundred forty-seven million, four hundred ninety-two thousand, eighty-seven".