13778076464671 has 2 divisors, whose sum is σ = 13778076464672. Its totient is φ = 13778076464670.

The previous prime is 13778076464549. The next prime is 13778076464731. The reversal of 13778076464671 is 17646467087731.

It is a strong prime.

It is an emirp because it is prime and its reverse (17646467087731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13778076464671 - 2⁷ = 13778076464543 is a prime.

It is a super-2 number, since 2×13778076464671² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13778076464597 and 13778076464606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13878076464671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6889038232335 + 6889038232336.

It is an arithmetic number, because the mean of its divisors is an integer number (6889038232336).

Almost surely, 2^{13778076464671} is an apocalyptic number.

13778076464671 is a deficient number, since it is larger than the sum of its proper divisors (1).

13778076464671 is an equidigital number, since it uses as much as digits as its factorization.

13778076464671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 199148544, while the sum is 67.

The spelling of 13778076464671 in words is "thirteen trillion, seven hundred seventy-eight billion, seventy-six million, four hundred sixty-four thousand, six hundred seventy-one".