105515770813 has 2 divisors, whose sum is σ = 105515770814. Its totient is φ = 105515770812.

The previous prime is 105515770783. The next prime is 105515770819. The reversal of 105515770813 is 318077515501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65804049529 + 39711721284 = 256523^2 + 199278^2 .

It is a cyclic number.

It is not a de Polignac number, because 105515770813 - 2⁵ = 105515770781 is a prime.

It is a super-2 number, since 2×105515770813² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105515770813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105515770819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52757885406 + 52757885407.

It is an arithmetic number, because the mean of its divisors is an integer number (52757885407).

Almost surely, 2^105515770813 is an apocalyptic number.

It is an amenable number.

105515770813 is a deficient number, since it is larger than the sum of its proper divisors (1).

105515770813 is an equidigital number, since it uses as much as digits as its factorization.

105515770813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147000, while the sum is 43.

The spelling of 105515770813 in words is "one hundred five billion, five hundred fifteen million, seven hundred seventy thousand, eight hundred thirteen".