66600048401 has 2 divisors, whose sum is σ = 66600048402. Its totient is φ = 66600048400.

The previous prime is 66600048337. The next prime is 66600048409. The reversal of 66600048401 is 10484000666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34736013376 + 31864035025 = 186376^2 + 178505^2 .

It is a cyclic number.

It is not a de Polignac number, because 66600048401 - 2⁶ = 66600048337 is a prime.

It is not a weakly prime, because it can be changed into another prime (66600048409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33300024200 + 33300024201.

It is an arithmetic number, because the mean of its divisors is an integer number (33300024201).

Almost surely, 2^66600048401 is an apocalyptic number.

It is an amenable number.

66600048401 is a deficient number, since it is larger than the sum of its proper divisors (1).

66600048401 is an equidigital number, since it uses as much as digits as its factorization.

66600048401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 66600048401 in words is "sixty-six billion, six hundred million, forty-eight thousand, four hundred one".