18737383523377 has 2 divisors, whose sum is σ = 18737383523378. Its totient is φ = 18737383523376.

The previous prime is 18737383523357. The next prime is 18737383523399. The reversal of 18737383523377 is 77332538373781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14097253946161 + 4640129577216 = 3754631^2 + 2154096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18737383523377 is a prime.

It is not a weakly prime, because it can be changed into another prime (18737383523347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9368691761688 + 9368691761689.

It is an arithmetic number, because the mean of its divisors is an integer number (9368691761689).

Almost surely, 2^{18737383523377} is an apocalyptic number.

It is an amenable number.

18737383523377 is a deficient number, since it is larger than the sum of its proper divisors (1).

18737383523377 is an equidigital number, since it uses as much as digits as its factorization.

18737383523377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373403520, while the sum is 67.

The spelling of 18737383523377 in words is "eighteen trillion, seven hundred thirty-seven billion, three hundred eighty-three million, five hundred twenty-three thousand, three hundred seventy-seven".