24561163261 has 2 divisors, whose sum is σ = 24561163262. Its totient is φ = 24561163260.

The previous prime is 24561163213. The next prime is 24561163301. The reversal of 24561163261 is 16236116542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24026860036 + 534303225 = 155006^2 + 23115^2 .

It is a cyclic number.

It is not a de Polignac number, because 24561163261 - 2⁹ = 24561162749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24561163261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24561563261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12280581630 + 12280581631.

It is an arithmetic number, because the mean of its divisors is an integer number (12280581631).

Almost surely, 2^24561163261 is an apocalyptic number.

It is an amenable number.

24561163261 is a deficient number, since it is larger than the sum of its proper divisors (1).

24561163261 is an equidigital number, since it uses as much as digits as its factorization.

24561163261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The spelling of 24561163261 in words is "twenty-four billion, five hundred sixty-one million, one hundred sixty-three thousand, two hundred sixty-one".