245891431543 has 2 divisors, whose sum is σ = 245891431544. Its totient is φ = 245891431542.

The previous prime is 245891431531. The next prime is 245891431573. The reversal of 245891431543 is 345134198542.

245891431543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245891431543 is a prime.

It is a super-2 number, since 2×245891431543² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245891431523) 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, 122945715771 + 122945715772.

It is an arithmetic number, because the mean of its divisors is an integer number (122945715772).

Almost surely, 2^245891431543 is an apocalyptic number.

245891431543 is a deficient number, since it is larger than the sum of its proper divisors (1).

245891431543 is an equidigital number, since it uses as much as digits as its factorization.

245891431543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 49.

The spelling of 245891431543 in words is "two hundred forty-five billion, eight hundred ninety-one million, four hundred thirty-one thousand, five hundred forty-three".