145253400491 has 2 divisors, whose sum is σ = 145253400492. Its totient is φ = 145253400490.

The previous prime is 145253400473. The next prime is 145253400517. The reversal of 145253400491 is 194004352541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145253400491 - 2¹⁸ = 145253138347 is a prime.

It is not a weakly prime, because it can be changed into another prime (145253400401) 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, 72626700245 + 72626700246.

It is an arithmetic number, because the mean of its divisors is an integer number (72626700246).

Almost surely, 2^145253400491 is an apocalyptic number.

145253400491 is a deficient number, since it is larger than the sum of its proper divisors (1).

145253400491 is an equidigital number, since it uses as much as digits as its factorization.

145253400491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 145253400491 in words is "one hundred forty-five billion, two hundred fifty-three million, four hundred thousand, four hundred ninety-one".