4891404677009 has 2 divisors, whose sum is σ = 4891404677010. Its totient is φ = 4891404677008.

The previous prime is 4891404676987. The next prime is 4891404677069. The reversal of 4891404677009 is 9007764041984.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3925846890625 + 965557786384 = 1981375^2 + 982628^2 .

It is a cyclic number.

It is not a de Polignac number, because 4891404677009 - 2²⁴ = 4891387899793 is a prime.

It is a super-2 number, since 2×4891404677009² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4891404677069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445702338504 + 2445702338505.

It is an arithmetic number, because the mean of its divisors is an integer number (2445702338505).

Almost surely, 2^{4891404677009} is an apocalyptic number.

It is an amenable number.

4891404677009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4891404677009 is an equidigital number, since it uses as much as digits as its factorization.

4891404677009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 4891404677009 in words is "four trillion, eight hundred ninety-one billion, four hundred four million, six hundred seventy-seven thousand, nine".