220679428251 has 8 divisors (see below), whose sum is σ = 294246106704. Its totient is φ = 147116184320.

The previous prime is 220679428243. The next prime is 220679428279. The reversal of 220679428251 is 152824976022.

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 220679428251 - 2³ = 220679428243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220679428251.

It is not an unprimeable number, because it can be changed into a prime (220679428751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704766 + ... + 968531.

It is an arithmetic number, because the mean of its divisors is an integer number (36780763338).

Almost surely, 2^220679428251 is an apocalyptic number.

220679428251 is a deficient number, since it is larger than the sum of its proper divisors (73566678453).

220679428251 is a wasteful number, since it uses less digits than its factorization.

220679428251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717261.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 220679428251 in words is "two hundred twenty billion, six hundred seventy-nine million, four hundred twenty-eight thousand, two hundred fifty-one".