24149689381 has 2 divisors, whose sum is σ = 24149689382. Its totient is φ = 24149689380.

The previous prime is 24149689357. The next prime is 24149689397. The reversal of 24149689381 is 18398694142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17415025156 + 6734664225 = 131966^2 + 82065^2 .

It is a cyclic number.

It is not a de Polignac number, because 24149689381 - 2⁹ = 24149688869 is a prime.

It is a super-2 number, since 2×24149689381² (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 (24149689321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12074844690 + 12074844691.

It is an arithmetic number, because the mean of its divisors is an integer number (12074844691).

Almost surely, 2^24149689381 is an apocalyptic number.

It is an amenable number.

24149689381 is a deficient number, since it is larger than the sum of its proper divisors (1).

24149689381 is an equidigital number, since it uses as much as digits as its factorization.

24149689381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 55.

The spelling of 24149689381 in words is "twenty-four billion, one hundred forty-nine million, six hundred eighty-nine thousand, three hundred eighty-one".