24709742957 has 2 divisors, whose sum is σ = 24709742958. Its totient is φ = 24709742956.

The previous prime is 24709742923. The next prime is 24709743007. The reversal of 24709742957 is 75924790742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20661475081 + 4048267876 = 143741^2 + 63626^2 .

It is a cyclic number.

It is not a de Polignac number, because 24709742957 - 2¹⁰ = 24709741933 is a prime.

It is a super-2 number, since 2×24709742957² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24709742357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12354871478 + 12354871479.

It is an arithmetic number, because the mean of its divisors is an integer number (12354871479).

Almost surely, 2^24709742957 is an apocalyptic number.

It is an amenable number.

24709742957 is a deficient number, since it is larger than the sum of its proper divisors (1).

24709742957 is an equidigital number, since it uses as much as digits as its factorization.

24709742957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 24709742957 in words is "twenty-four billion, seven hundred nine million, seven hundred forty-two thousand, nine hundred fifty-seven".