145040121643 has 2 divisors, whose sum is σ = 145040121644. Its totient is φ = 145040121642.

The previous prime is 145040121641. The next prime is 145040121683. The reversal of 145040121643 is 346121040541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145040121643 - 2¹ = 145040121641 is a prime.

Together with 145040121641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145040121641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72520060821 + 72520060822.

It is an arithmetic number, because the mean of its divisors is an integer number (72520060822).

Almost surely, 2^145040121643 is an apocalyptic number.

145040121643 is a deficient number, since it is larger than the sum of its proper divisors (1).

145040121643 is an equidigital number, since it uses as much as digits as its factorization.

145040121643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 145040121643 in words is "one hundred forty-five billion, forty million, one hundred twenty-one thousand, six hundred forty-three".