24891094409 has 2 divisors, whose sum is σ = 24891094410. Its totient is φ = 24891094408.

The previous prime is 24891094387. The next prime is 24891094439. The reversal of 24891094409 is 90449019842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20555530384 + 4335564025 = 143372^2 + 65845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24891094409 is a prime.

It is not a weakly prime, because it can be changed into another prime (24891094439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12445547204 + 12445547205.

It is an arithmetic number, because the mean of its divisors is an integer number (12445547205).

Almost surely, 2^24891094409 is an apocalyptic number.

It is an amenable number.

24891094409 is a deficient number, since it is larger than the sum of its proper divisors (1).

24891094409 is an equidigital number, since it uses as much as digits as its factorization.

24891094409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 24891094409 in words is "twenty-four billion, eight hundred ninety-one million, ninety-four thousand, four hundred nine".