220994726655 has 8 divisors (see below), whose sum is σ = 353591562672. Its totient is φ = 117863854208.

The previous prime is 220994726629. The next prime is 220994726669. The reversal of 220994726655 is 556627499022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220994726655 - 2⁸ = 220994726399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220994726595 and 220994726604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7366490874 + ... + 7366490903.

It is an arithmetic number, because the mean of its divisors is an integer number (44198945334).

Almost surely, 2^220994726655 is an apocalyptic number.

220994726655 is a deficient number, since it is larger than the sum of its proper divisors (132596836017).

220994726655 is a wasteful number, since it uses less digits than its factorization.

220994726655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14732981785.

The product of its (nonzero) digits is 16329600, while the sum is 57.

The spelling of 220994726655 in words is "two hundred twenty billion, nine hundred ninety-four million, seven hundred twenty-six thousand, six hundred fifty-five".