21550160160611 has 2 divisors, whose sum is σ = 21550160160612. Its totient is φ = 21550160160610.

The previous prime is 21550160160593. The next prime is 21550160160623. The reversal of 21550160160611 is 11606106105512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21550160160611 - 2¹⁸ = 21550159898467 is a prime.

It is not a weakly prime, because it can be changed into another prime (21550160160631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10775080080305 + 10775080080306.

It is an arithmetic number, because the mean of its divisors is an integer number (10775080080306).

Almost surely, 2^{21550160160611} is an apocalyptic number.

21550160160611 is a deficient number, since it is larger than the sum of its proper divisors (1).

21550160160611 is an equidigital number, since it uses as much as digits as its factorization.

21550160160611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 21550160160611 in words is "twenty-one trillion, five hundred fifty billion, one hundred sixty million, one hundred sixty thousand, six hundred eleven".