249670837747 has 2 divisors, whose sum is σ = 249670837748. Its totient is φ = 249670837746.

The previous prime is 249670837643. The next prime is 249670837769. The reversal of 249670837747 is 747738076942.

249670837747 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 a de Polignac number, because none of the positive numbers 2^k-249670837747 is a prime.

It is not a weakly prime, because it can be changed into another prime (249670897747) 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, 124835418873 + 124835418874.

It is an arithmetic number, because the mean of its divisors is an integer number (124835418874).

Almost surely, 2^249670837747 is an apocalyptic number.

249670837747 is a deficient number, since it is larger than the sum of its proper divisors (1).

249670837747 is an equidigital number, since it uses as much as digits as its factorization.

249670837747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99574272, while the sum is 64.

The spelling of 249670837747 in words is "two hundred forty-nine billion, six hundred seventy million, eight hundred thirty-seven thousand, seven hundred forty-seven".