220240401623 has 4 divisors (see below), whose sum is σ = 240262256328. Its totient is φ = 200218546920.

The previous prime is 220240401593. The next prime is 220240401629. The reversal of 220240401623 is 326104042022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220240401623 - 2¹⁰ = 220240400599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220240401592 and 220240401601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220240401629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10010927336 + ... + 10010927357.

It is an arithmetic number, because the mean of its divisors is an integer number (60065564082).

Almost surely, 2^220240401623 is an apocalyptic number.

220240401623 is a deficient number, since it is larger than the sum of its proper divisors (20021854705).

220240401623 is a wasteful number, since it uses less digits than its factorization.

220240401623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021854704.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 220240401623 its reverse (326104042022), we get a palindrome (546344443645).

The spelling of 220240401623 in words is "two hundred twenty billion, two hundred forty million, four hundred one thousand, six hundred twenty-three".