24922987961 has 2 divisors, whose sum is σ = 24922987962. Its totient is φ = 24922987960.

The previous prime is 24922987949. The next prime is 24922987981. The reversal of 24922987961 is 16978922942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22247512336 + 2675475625 = 149156^2 + 51725^2 .

It is a cyclic number.

It is not a de Polignac number, because 24922987961 - 2¹⁰ = 24922986937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24922987961.

It is not a weakly prime, because it can be changed into another prime (24922987931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12461493980 + 12461493981.

It is an arithmetic number, because the mean of its divisors is an integer number (12461493981).

Almost surely, 2^24922987961 is an apocalyptic number.

It is an amenable number.

24922987961 is a deficient number, since it is larger than the sum of its proper divisors (1).

24922987961 is an equidigital number, since it uses as much as digits as its factorization.

24922987961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 59.

The spelling of 24922987961 in words is "twenty-four billion, nine hundred twenty-two million, nine hundred eighty-seven thousand, nine hundred sixty-one".