5544458764921 has 2 divisors, whose sum is σ = 5544458764922. Its totient is φ = 5544458764920.

The previous prime is 5544458764919. The next prime is 5544458764987. The reversal of 5544458764921 is 1294678544455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4371699721321 + 1172759043600 = 2090861^2 + 1082940^2 .

It is a cyclic number.

It is not a de Polignac number, because 5544458764921 - 2¹ = 5544458764919 is a prime.

Together with 5544458764919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5544458704921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2772229382460 + 2772229382461.

It is an arithmetic number, because the mean of its divisors is an integer number (2772229382461).

Almost surely, 2^{5544458764921} is an apocalyptic number.

It is an amenable number.

5544458764921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5544458764921 is an equidigital number, since it uses as much as digits as its factorization.

5544458764921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536000, while the sum is 64.

The spelling of 5544458764921 in words is "five trillion, five hundred forty-four billion, four hundred fifty-eight million, seven hundred sixty-four thousand, nine hundred twenty-one".