15789225961 has 2 divisors, whose sum is σ = 15789225962. Its totient is φ = 15789225960.

The previous prime is 15789225887. The next prime is 15789225997. The reversal of 15789225961 is 16952298751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13409640000 + 2379585961 = 115800^2 + 48781^2 .

It is a cyclic number.

It is not a de Polignac number, because 15789225961 - 2¹⁹ = 15788701673 is a prime.

It is not a weakly prime, because it can be changed into another prime (15789225461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7894612980 + 7894612981.

It is an arithmetic number, because the mean of its divisors is an integer number (7894612981).

Almost surely, 2^15789225961 is an apocalyptic number.

It is an amenable number.

15789225961 is a deficient number, since it is larger than the sum of its proper divisors (1).

15789225961 is an equidigital number, since it uses as much as digits as its factorization.

15789225961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 55.

The spelling of 15789225961 in words is "fifteen billion, seven hundred eighty-nine million, two hundred twenty-five thousand, nine hundred sixty-one".