154455964889 has 2 divisors, whose sum is σ = 154455964890. Its totient is φ = 154455964888.

The previous prime is 154455964853. The next prime is 154455964913. The reversal of 154455964889 is 988469554451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83336142400 + 71119822489 = 288680^2 + 266683^2 .

It is a cyclic number.

It is not a de Polignac number, because 154455964889 - 2²⁴ = 154439187673 is a prime.

It is not a weakly prime, because it can be changed into another prime (154455964589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77227982444 + 77227982445.

It is an arithmetic number, because the mean of its divisors is an integer number (77227982445).

Almost surely, 2^154455964889 is an apocalyptic number.

It is an amenable number.

154455964889 is a deficient number, since it is larger than the sum of its proper divisors (1).

154455964889 is an equidigital number, since it uses as much as digits as its factorization.

154455964889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832000, while the sum is 68.

The spelling of 154455964889 in words is "one hundred fifty-four billion, four hundred fifty-five million, nine hundred sixty-four thousand, eight hundred eighty-nine".