4891380346779 has 4 divisors (see below), whose sum is σ = 6521840462376. Its totient is φ = 3260920231184.

The previous prime is 4891380346753. The next prime is 4891380346793. The reversal of 4891380346779 is 9776430831984.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4891380346779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4891380346709) 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, 815230057794 + ... + 815230057799.

It is an arithmetic number, because the mean of its divisors is an integer number (1630460115594).

Almost surely, 2^{4891380346779} is an apocalyptic number.

4891380346779 is a deficient number, since it is larger than the sum of its proper divisors (1630460115597).

4891380346779 is a wasteful number, since it uses less digits than its factorization.

4891380346779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630460115596.

The product of its (nonzero) digits is 219469824, while the sum is 69.

The spelling of 4891380346779 in words is "four trillion, eight hundred ninety-one billion, three hundred eighty million, three hundred forty-six thousand, seven hundred seventy-nine".