244545424545491 has 2 divisors, whose sum is σ = 244545424545492. Its totient is φ = 244545424545490.

The previous prime is 244545424545463. The next prime is 244545424545509. The reversal of 244545424545491 is 194545424545442.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 244545424545491 - 2³⁰ = 244544350803667 is a prime.

It is a super-2 number, since 2×244545424545491² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (244545424545091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122272712272745 + 122272712272746.

It is an arithmetic number, because the mean of its divisors is an integer number (122272712272746).

Almost surely, 2^{244545424545491} is an apocalyptic number.

244545424545491 is a deficient number, since it is larger than the sum of its proper divisors (1).

244545424545491 is an equidigital number, since it uses as much as digits as its factorization.

244545424545491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640000, while the sum is 62.

The spelling of 244545424545491 in words is "two hundred forty-four trillion, five hundred forty-five billion, four hundred twenty-four million, five hundred forty-five thousand, four hundred ninety-one".