66524750377 has 2 divisors, whose sum is σ = 66524750378. Its totient is φ = 66524750376.

The previous prime is 66524750339. The next prime is 66524750429. The reversal of 66524750377 is 77305742566.

It is an a-pointer prime, because the next prime (66524750429) can be obtained adding 66524750377 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66267115776 + 257634601 = 257424^2 + 16051^2 .

It is a cyclic number.

It is not a de Polignac number, because 66524750377 - 2¹⁹ = 66524226089 is a prime.

It is not a weakly prime, because it can be changed into another prime (66524750077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33262375188 + 33262375189.

It is an arithmetic number, because the mean of its divisors is an integer number (33262375189).

Almost surely, 2^66524750377 is an apocalyptic number.

It is an amenable number.

66524750377 is a deficient number, since it is larger than the sum of its proper divisors (1).

66524750377 is an equidigital number, since it uses as much as digits as its factorization.

66524750377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7408800, while the sum is 52.

The spelling of 66524750377 in words is "sixty-six billion, five hundred twenty-four million, seven hundred fifty thousand, three hundred seventy-seven".