13820115577 has 2 divisors, whose sum is σ = 13820115578. Its totient is φ = 13820115576.

The previous prime is 13820115499. The next prime is 13820115581. The reversal of 13820115577 is 77551102831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10121164816 + 3698950761 = 100604^2 + 60819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13820115577 is a prime.

It is not a weakly prime, because it can be changed into another prime (13820116577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6910057788 + 6910057789.

It is an arithmetic number, because the mean of its divisors is an integer number (6910057789).

Almost surely, 2^13820115577 is an apocalyptic number.

It is an amenable number.

13820115577 is a deficient number, since it is larger than the sum of its proper divisors (1).

13820115577 is an equidigital number, since it uses as much as digits as its factorization.

13820115577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 40.

The spelling of 13820115577 in words is "thirteen billion, eight hundred twenty million, one hundred fifteen thousand, five hundred seventy-seven".