10878197761 has 2 divisors, whose sum is σ = 10878197762. Its totient is φ = 10878197760.

The previous prime is 10878197753. The next prime is 10878197773. The reversal of 10878197761 is 16779187801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8452044225 + 2426153536 = 91935^2 + 49256^2 .

It is a cyclic number.

It is not a de Polignac number, because 10878197761 - 2³ = 10878197753 is a prime.

It is not a weakly prime, because it can be changed into another prime (10878197261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5439098880 + 5439098881.

It is an arithmetic number, because the mean of its divisors is an integer number (5439098881).

Almost surely, 2^10878197761 is an apocalyptic number.

It is an amenable number.

10878197761 is a deficient number, since it is larger than the sum of its proper divisors (1).

10878197761 is an equidigital number, since it uses as much as digits as its factorization.

10878197761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 55.

The spelling of 10878197761 in words is "ten billion, eight hundred seventy-eight million, one hundred ninety-seven thousand, seven hundred sixty-one".