24789972761 has 2 divisors, whose sum is σ = 24789972762. Its totient is φ = 24789972760.

The previous prime is 24789972749. The next prime is 24789972799. The reversal of 24789972761 is 16727998742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12991668361 + 11798304400 = 113981^2 + 108620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24789972761 is a prime.

It is a super-2 number, since 2×24789972761² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 24789972694 and 24789972703.

It is not a weakly prime, because it can be changed into another prime (24789972161) 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, 12394986380 + 12394986381.

It is an arithmetic number, because the mean of its divisors is an integer number (12394986381).

Almost surely, 2^24789972761 is an apocalyptic number.

It is an amenable number.

24789972761 is a deficient number, since it is larger than the sum of its proper divisors (1).

24789972761 is an equidigital number, since it uses as much as digits as its factorization.

24789972761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21337344, while the sum is 62.

The spelling of 24789972761 in words is "twenty-four billion, seven hundred eighty-nine million, nine hundred seventy-two thousand, seven hundred sixty-one".