6770384017991 has 4 divisors (see below), whose sum is σ = 7385873474184. Its totient is φ = 6154894561800.

The previous prime is 6770384017973. The next prime is 6770384018003. The reversal of 6770384017991 is 1997104830776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6770384017991 - 2³⁸ = 6495506111047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6770384067991) 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, 307744728080 + ... + 307744728101.

It is an arithmetic number, because the mean of its divisors is an integer number (1846468368546).

Almost surely, 2^{6770384017991} is an apocalyptic number.

6770384017991 is a deficient number, since it is larger than the sum of its proper divisors (615489456193).

6770384017991 is a wasteful number, since it uses less digits than its factorization.

6770384017991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615489456192.

The product of its (nonzero) digits is 16003008, while the sum is 62.

The spelling of 6770384017991 in words is "six trillion, seven hundred seventy billion, three hundred eighty-four million, seventeen thousand, nine hundred ninety-one".