247415359421 has 2 divisors, whose sum is σ = 247415359422. Its totient is φ = 247415359420.

The previous prime is 247415359343. The next prime is 247415359487. The reversal of 247415359421 is 124953514742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246760562500 + 654796921 = 496750^2 + 25589^2 .

It is a cyclic number.

It is not a de Polignac number, because 247415359421 - 2³⁴ = 230235490237 is a prime.

It is a super-2 number, since 2×247415359421² (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 (247415359621) 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, 123707679710 + 123707679711.

It is an arithmetic number, because the mean of its divisors is an integer number (123707679711).

Almost surely, 2^247415359421 is an apocalyptic number.

It is an amenable number.

247415359421 is a deficient number, since it is larger than the sum of its proper divisors (1).

247415359421 is an equidigital number, since it uses as much as digits as its factorization.

247415359421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 47.

The spelling of 247415359421 in words is "two hundred forty-seven billion, four hundred fifteen million, three hundred fifty-nine thousand, four hundred twenty-one".