55657142201599 has 2 divisors, whose sum is σ = 55657142201600. Its totient is φ = 55657142201598.

The previous prime is 55657142201587. The next prime is 55657142201623. The reversal of 55657142201599 is 99510224175655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55657142201599 - 2¹⁷ = 55657142070527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55657142201299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27828571100799 + 27828571100800.

It is an arithmetic number, because the mean of its divisors is an integer number (27828571100800).

Almost surely, 2^{55657142201599} is an apocalyptic number.

55657142201599 is a deficient number, since it is larger than the sum of its proper divisors (1).

55657142201599 is an equidigital number, since it uses as much as digits as its factorization.

55657142201599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020000, while the sum is 61.

The spelling of 55657142201599 in words is "fifty-five trillion, six hundred fifty-seven billion, one hundred forty-two million, two hundred one thousand, five hundred ninety-nine".