10277778505541 has 2 divisors, whose sum is σ = 10277778505542. Its totient is φ = 10277778505540.

The previous prime is 10277778505531. The next prime is 10277778505549. The reversal of 10277778505541 is 14550587777201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10277313930625 + 464574916 = 3205825^2 + 21554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10277778505541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10277778505549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5138889252770 + 5138889252771.

It is an arithmetic number, because the mean of its divisors is an integer number (5138889252771).

Almost surely, 2^{10277778505541} is an apocalyptic number.

It is an amenable number.

10277778505541 is a deficient number, since it is larger than the sum of its proper divisors (1).

10277778505541 is an equidigital number, since it uses as much as digits as its factorization.

10277778505541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19208000, while the sum is 59.

The spelling of 10277778505541 in words is "ten trillion, two hundred seventy-seven billion, seven hundred seventy-eight million, five hundred five thousand, five hundred forty-one".