220360881561 has 8 divisors (see below), whose sum is σ = 296414637600. Its totient is φ = 145607189952.

The previous prime is 220360881557. The next prime is 220360881571. The reversal of 220360881561 is 165188063022.

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

It is not a de Polignac number, because 220360881561 - 2² = 220360881557 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (220360881541) 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, 325015711 + ... + 325016388.

It is an arithmetic number, because the mean of its divisors is an integer number (37051829700).

Almost surely, 2^220360881561 is an apocalyptic number.

It is an amenable number.

220360881561 is a deficient number, since it is larger than the sum of its proper divisors (76053756039).

220360881561 is a wasteful number, since it uses less digits than its factorization.

220360881561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650032215.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 220360881561 in words is "two hundred twenty billion, three hundred sixty million, eight hundred eighty-one thousand, five hundred sixty-one".