13671067777 has 4 divisors (see below), whose sum is σ = 14390597680. Its totient is φ = 12951537876.

The previous prime is 13671067759. The next prime is 13671067793. The reversal of 13671067777 is 77776017631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77776017631 = 13 ⋅5982770587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13671067777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13671067717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359764923 + ... + 359764960.

It is an arithmetic number, because the mean of its divisors is an integer number (3597649420).

Almost surely, 2^13671067777 is an apocalyptic number.

It is an amenable number.

13671067777 is a deficient number, since it is larger than the sum of its proper divisors (719529903).

13671067777 is an equidigital number, since it uses as much as digits as its factorization.

13671067777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719529902.

The product of its (nonzero) digits is 1815156, while the sum is 52.

The spelling of 13671067777 in words is "thirteen billion, six hundred seventy-one million, sixty-seven thousand, seven hundred seventy-seven".