220667478669551 has 2 divisors, whose sum is σ = 220667478669552. Its totient is φ = 220667478669550.

The previous prime is 220667478669527. The next prime is 220667478669587. The reversal of 220667478669551 is 155966874766022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220667478669551 is a prime.

It is a super-2 number, since 2×220667478669551² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220667478669251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110333739334775 + 110333739334776.

It is an arithmetic number, because the mean of its divisors is an integer number (110333739334776).

Almost surely, 2^{220667478669551} is an apocalyptic number.

220667478669551 is a deficient number, since it is larger than the sum of its proper divisors (1).

220667478669551 is an equidigital number, since it uses as much as digits as its factorization.

220667478669551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1828915200, while the sum is 74.

The spelling of 220667478669551 in words is "two hundred twenty trillion, six hundred sixty-seven billion, four hundred seventy-eight million, six hundred sixty-nine thousand, five hundred fifty-one".