145336238491 has 2 divisors, whose sum is σ = 145336238492. Its totient is φ = 145336238490.

The previous prime is 145336238461. The next prime is 145336238519. The reversal of 145336238491 is 194832633541.

145336238491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145336238491 - 2²¹ = 145334141339 is a prime.

It is a super-2 number, since 2×145336238491² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145336238461) 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, 72668119245 + 72668119246.

It is an arithmetic number, because the mean of its divisors is an integer number (72668119246).

Almost surely, 2^145336238491 is an apocalyptic number.

145336238491 is a deficient number, since it is larger than the sum of its proper divisors (1).

145336238491 is an equidigital number, since it uses as much as digits as its factorization.

145336238491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The spelling of 145336238491 in words is "one hundred forty-five billion, three hundred thirty-six million, two hundred thirty-eight thousand, four hundred ninety-one".