55877442451549 has 2 divisors, whose sum is σ = 55877442451550. Its totient is φ = 55877442451548.

The previous prime is 55877442451541. The next prime is 55877442451553. The reversal of 55877442451549 is 94515424477855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52452285336025 + 3425157115524 = 7242395^2 + 1850718^2 .

It is a cyclic number.

It is not a de Polignac number, because 55877442451549 - 2³ = 55877442451541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55877442451541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27938721225774 + 27938721225775.

It is an arithmetic number, because the mean of its divisors is an integer number (27938721225775).

Almost surely, 2^{55877442451549} is an apocalyptic number.

It is an amenable number.

55877442451549 is a deficient number, since it is larger than the sum of its proper divisors (1).

55877442451549 is an equidigital number, since it uses as much as digits as its factorization.

55877442451549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960000, while the sum is 70.

The spelling of 55877442451549 in words is "fifty-five trillion, eight hundred seventy-seven billion, four hundred forty-two million, four hundred fifty-one thousand, five hundred forty-nine".