36388519777 has 2 divisors, whose sum is σ = 36388519778. Its totient is φ = 36388519776.

The previous prime is 36388519753. The next prime is 36388519781. The reversal of 36388519777 is 77791588363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25396884496 + 10991635281 = 159364^2 + 104841^2 .

It is an emirp because it is prime and its reverse (77791588363) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36388519777 is a prime.

It is a super-2 number, since 2×36388519777² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36388519177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18194259888 + 18194259889.

It is an arithmetic number, because the mean of its divisors is an integer number (18194259889).

Almost surely, 2^36388519777 is an apocalyptic number.

It is an amenable number.

36388519777 is a deficient number, since it is larger than the sum of its proper divisors (1).

36388519777 is an equidigital number, since it uses as much as digits as its factorization.

36388519777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53343360, while the sum is 64.

The spelling of 36388519777 in words is "thirty-six billion, three hundred eighty-eight million, five hundred nineteen thousand, seven hundred seventy-seven".