247754120813 has 2 divisors, whose sum is σ = 247754120814. Its totient is φ = 247754120812.

The previous prime is 247754120791. The next prime is 247754120837. The reversal of 247754120813 is 318021457742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224436220009 + 23317900804 = 473747^2 + 152702^2 .

It is a cyclic number.

It is not a de Polignac number, because 247754120813 - 2²⁸ = 247485685357 is a prime.

It is a super-2 number, since 2×247754120813² (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 (247754120843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123877060406 + 123877060407.

It is an arithmetic number, because the mean of its divisors is an integer number (123877060407).

Almost surely, 2^247754120813 is an apocalyptic number.

It is an amenable number.

247754120813 is a deficient number, since it is larger than the sum of its proper divisors (1).

247754120813 is an equidigital number, since it uses as much as digits as its factorization.

247754120813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 247754120813 in words is "two hundred forty-seven billion, seven hundred fifty-four million, one hundred twenty thousand, eight hundred thirteen".