24871994417 has 2 divisors, whose sum is σ = 24871994418. Its totient is φ = 24871994416.

The previous prime is 24871994351. The next prime is 24871994447. The reversal of 24871994417 is 71449917842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22788619681 + 2083374736 = 150959^2 + 45644^2 .

It is a cyclic number.

It is not a de Polignac number, because 24871994417 - 2¹² = 24871990321 is a prime.

It is a super-2 number, since 2×24871994417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24871994447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12435997208 + 12435997209.

It is an arithmetic number, because the mean of its divisors is an integer number (12435997209).

Almost surely, 2^24871994417 is an apocalyptic number.

It is an amenable number.

24871994417 is a deficient number, since it is larger than the sum of its proper divisors (1).

24871994417 is an equidigital number, since it uses as much as digits as its factorization.

24871994417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The spelling of 24871994417 in words is "twenty-four billion, eight hundred seventy-one million, nine hundred ninety-four thousand, four hundred seventeen".