172347954882091 has 2 divisors, whose sum is σ = 172347954882092. Its totient is φ = 172347954882090.

The previous prime is 172347954882041. The next prime is 172347954882113. The reversal of 172347954882091 is 190288459743271.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172347954882091 - 2³⁹ = 171798199068203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172347954882091.

It is not a weakly prime, because it can be changed into another prime (172347954882041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86173977441045 + 86173977441046.

It is an arithmetic number, because the mean of its divisors is an integer number (86173977441046).

Almost surely, 2^{172347954882091} is an apocalyptic number.

172347954882091 is a deficient number, since it is larger than the sum of its proper divisors (1).

172347954882091 is an equidigital number, since it uses as much as digits as its factorization.

172347954882091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243855360, while the sum is 70.

The spelling of 172347954882091 in words is "one hundred seventy-two trillion, three hundred forty-seven billion, nine hundred fifty-four million, eight hundred eighty-two thousand, ninety-one".