23423020421161 has 2 divisors, whose sum is σ = 23423020421162. Its totient is φ = 23423020421160.

The previous prime is 23423020421137. The next prime is 23423020421189. The reversal of 23423020421161 is 16112402032432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16239441172761 + 7183579248400 = 4029819^2 + 2680220^2 .

It is a cyclic number.

It is not a de Polignac number, because 23423020421161 - 2⁴³ = 14626927398953 is a prime.

It is not a weakly prime, because it can be changed into another prime (23423020421111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11711510210580 + 11711510210581.

It is an arithmetic number, because the mean of its divisors is an integer number (11711510210581).

Almost surely, 2^{23423020421161} is an apocalyptic number.

It is an amenable number.

23423020421161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23423020421161 is an equidigital number, since it uses as much as digits as its factorization.

23423020421161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 23423020421161 its reverse (16112402032432), we get a palindrome (39535422453593).

The spelling of 23423020421161 in words is "twenty-three trillion, four hundred twenty-three billion, twenty million, four hundred twenty-one thousand, one hundred sixty-one".