1945253441251 has 2 divisors, whose sum is σ = 1945253441252. Its totient is φ = 1945253441250.

The previous prime is 1945253441239. The next prime is 1945253441269. The reversal of 1945253441251 is 1521443525491.

It is a weak prime.

It is an emirp because it is prime and its reverse (1521443525491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1945253441251 - 2⁷ = 1945253441123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1945253471251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972626720625 + 972626720626.

It is an arithmetic number, because the mean of its divisors is an integer number (972626720626).

Almost surely, 2^{1945253441251} is an apocalyptic number.

1945253441251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945253441251 is an equidigital number, since it uses as much as digits as its factorization.

1945253441251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 46.

The spelling of 1945253441251 in words is "one trillion, nine hundred forty-five billion, two hundred fifty-three million, four hundred forty-one thousand, two hundred fifty-one".