220667478669555 has 16 divisors (see below), whose sum is σ = 353068359097344. Its totient is φ = 117689190881760.

The previous prime is 220667478669551. The next prime is 220667478669587. The reversal of 220667478669555 is 555966874766022.

It is not a de Polignac number, because 220667478669555 - 2² = 220667478669551 is a prime.

It is a super-2 number, since 2×220667478669555² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220667478669551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6584670 + ... + 22015740.

It is an arithmetic number, because the mean of its divisors is an integer number (22066772443584).

Almost surely, 2^{220667478669555} is an apocalyptic number.

220667478669555 is a deficient number, since it is larger than the sum of its proper divisors (132400880427789).

220667478669555 is a wasteful number, since it uses less digits than its factorization.

220667478669555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16384426.

The product of its (nonzero) digits is 9144576000, while the sum is 78.

The spelling of 220667478669555 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-five".