4990755961889 has 2 divisors, whose sum is σ = 4990755961890. Its totient is φ = 4990755961888.

The previous prime is 4990755961883. The next prime is 4990755961909. The reversal of 4990755961889 is 9881695570994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4980783942289 + 9972019600 = 2231767^2 + 99860^2 .

It is a cyclic number.

It is not a de Polignac number, because 4990755961889 - 2¹² = 4990755957793 is a prime.

It is a super-2 number, since 2×4990755961889² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4990755961883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495377980944 + 2495377980945.

It is an arithmetic number, because the mean of its divisors is an integer number (2495377980945).

Almost surely, 2^{4990755961889} is an apocalyptic number.

It is an amenable number.

4990755961889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4990755961889 is an equidigital number, since it uses as much as digits as its factorization.

4990755961889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1763596800, while the sum is 80.

The spelling of 4990755961889 in words is "four trillion, nine hundred ninety billion, seven hundred fifty-five million, nine hundred sixty-one thousand, eight hundred eighty-nine".