172121446043 has 2 divisors, whose sum is σ = 172121446044. Its totient is φ = 172121446042.

The previous prime is 172121446037. The next prime is 172121446067. The reversal of 172121446043 is 340644121271.

172121446043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172121446043 - 2¹⁴ = 172121429659 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 172121445994 and 172121446012.

It is not a weakly prime, because it can be changed into another prime (172121446543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86060723021 + 86060723022.

It is an arithmetic number, because the mean of its divisors is an integer number (86060723022).

Almost surely, 2^172121446043 is an apocalyptic number.

172121446043 is a deficient number, since it is larger than the sum of its proper divisors (1).

172121446043 is an equidigital number, since it uses as much as digits as its factorization.

172121446043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 172121446043 in words is "one hundred seventy-two billion, one hundred twenty-one million, four hundred forty-six thousand, forty-three".