220667478669278 has 32 divisors (see below), whose sum is σ = 334701154944000. Its totient is φ = 109103231815200.

The previous prime is 220667478669269. The next prime is 220667478669329. The reversal of 220667478669278 is 872966874766022.

It is a super-2 number, since 2×220667478669278² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083838493 + ... + 1084042071.

It is an arithmetic number, because the mean of its divisors is an integer number (10459411092000).

Almost surely, 2^{220667478669278} is an apocalyptic number.

220667478669278 is a deficient number, since it is larger than the sum of its proper divisors (114033676274722).

220667478669278 is a wasteful number, since it uses less digits than its factorization.

220667478669278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210440.

The product of its (nonzero) digits is 8193540096, while the sum is 80.

The spelling of 220667478669278 in words is "two hundred twenty trillion, six hundred sixty-seven billion, four hundred seventy-eight million, six hundred sixty-nine thousand, two hundred seventy-eight".