23660516501 has 2 divisors, whose sum is σ = 23660516502. Its totient is φ = 23660516500.

The previous prime is 23660516471. The next prime is 23660516543. The reversal of 23660516501 is 10561506632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21942496900 + 1718019601 = 148130^2 + 41449^2 .

It is a cyclic number.

It is not a de Polignac number, because 23660516501 - 2¹⁰ = 23660515477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23660516101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11830258250 + 11830258251.

It is an arithmetic number, because the mean of its divisors is an integer number (11830258251).

Almost surely, 2^23660516501 is an apocalyptic number.

It is an amenable number.

23660516501 is a deficient number, since it is larger than the sum of its proper divisors (1).

23660516501 is an equidigital number, since it uses as much as digits as its factorization.

23660516501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 23660516501 in words is "twenty-three billion, six hundred sixty million, five hundred sixteen thousand, five hundred one".