10778366761 has 2 divisors, whose sum is σ = 10778366762. Its totient is φ = 10778366760.

The previous prime is 10778366749. The next prime is 10778366813. The reversal of 10778366761 is 16766387701.

It is an a-pointer prime, because the next prime (10778366813) can be obtained adding 10778366761 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., 10105275625 + 673091136 = 100525^2 + 25944^2 .

It is a cyclic number.

It is not a de Polignac number, because 10778366761 - 2¹¹ = 10778364713 is a prime.

It is a super-2 number, since 2×10778366761² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10778366699 and 10778366708.

It is not a weakly prime, because it can be changed into another prime (10778366701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5389183380 + 5389183381.

It is an arithmetic number, because the mean of its divisors is an integer number (5389183381).

Almost surely, 2^10778366761 is an apocalyptic number.

It is an amenable number.

10778366761 is a deficient number, since it is larger than the sum of its proper divisors (1).

10778366761 is an equidigital number, since it uses as much as digits as its factorization.

10778366761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 10778366761 in words is "ten billion, seven hundred seventy-eight million, three hundred sixty-six thousand, seven hundred sixty-one".