13073378377 has 2 divisors, whose sum is σ = 13073378378. Its totient is φ = 13073378376.

The previous prime is 13073378371. The next prime is 13073378407. The reversal of 13073378377 is 77387337031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12486721536 + 586656841 = 111744^2 + 24221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13073378377 is a prime.

It is a super-2 number, since 2×13073378377² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13073378377.

It is not a weakly prime, because it can be changed into another prime (13073378371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6536689188 + 6536689189.

It is an arithmetic number, because the mean of its divisors is an integer number (6536689189).

Almost surely, 2^13073378377 is an apocalyptic number.

It is an amenable number.

13073378377 is a deficient number, since it is larger than the sum of its proper divisors (1).

13073378377 is an equidigital number, since it uses as much as digits as its factorization.

13073378377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555848, while the sum is 49.

The spelling of 13073378377 in words is "thirteen billion, seventy-three million, three hundred seventy-eight thousand, three hundred seventy-seven".