220656957919 has 8 divisors (see below), whose sum is σ = 236078196080. Its totient is φ = 205616491200.

The previous prime is 220656957887. The next prime is 220656958001. The reversal of 220656957919 is 919759656022.

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 220656957919 - 2⁵ = 220656957887 is a prime.

It is a super-2 number, since 2×220656957919² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220656957419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95191662 + ... + 95193979.

It is an arithmetic number, because the mean of its divisors is an integer number (29509774510).

Almost surely, 2^220656957919 is an apocalyptic number.

220656957919 is a deficient number, since it is larger than the sum of its proper divisors (15421238161).

220656957919 is a wasteful number, since it uses less digits than its factorization.

220656957919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190385721.

The product of its (nonzero) digits is 18370800, while the sum is 61.

The spelling of 220656957919 in words is "two hundred twenty billion, six hundred fifty-six million, nine hundred fifty-seven thousand, nine hundred nineteen".