220081316578 has 4 divisors (see below), whose sum is σ = 330121974870. Its totient is φ = 110040658288.

The previous prime is 220081316573. The next prime is 220081316599. The reversal of 220081316578 is 875613180022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214551460809 + 5529855769 = 463197^2 + 74363^2 .

It is not an unprimeable number, because it can be changed into a prime (220081316573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55020329143 + ... + 55020329146.

Almost surely, 2^220081316578 is an apocalyptic number.

220081316578 is a deficient number, since it is larger than the sum of its proper divisors (110040658292).

220081316578 is a wasteful number, since it uses less digits than its factorization.

220081316578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110040658291.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 220081316578 in words is "two hundred twenty billion, eighty-one million, three hundred sixteen thousand, five hundred seventy-eight".