13045378477 has 2 divisors, whose sum is σ = 13045378478. Its totient is φ = 13045378476.

The previous prime is 13045378469. The next prime is 13045378529. The reversal of 13045378477 is 77487354031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11955454281 + 1089924196 = 109341^2 + 33014^2 .

It is a cyclic number.

It is not a de Polignac number, because 13045378477 - 2³ = 13045378469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13045378477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13045378877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6522689238 + 6522689239.

It is an arithmetic number, because the mean of its divisors is an integer number (6522689239).

Almost surely, 2^13045378477 is an apocalyptic number.

It is an amenable number.

13045378477 is a deficient number, since it is larger than the sum of its proper divisors (1).

13045378477 is an equidigital number, since it uses as much as digits as its factorization.

13045378477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 13045378477 in words is "thirteen billion, forty-five million, three hundred seventy-eight thousand, four hundred seventy-seven".