220406162503 has 8 divisors (see below), whose sum is σ = 221179165056. Its totient is φ = 219634272000.

The previous prime is 220406162461. The next prime is 220406162521. The reversal of 220406162503 is 305261604022.

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 220406162503 - 2¹⁷ = 220406031431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220406162903) 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, 120075 + ... + 674707.

It is an arithmetic number, because the mean of its divisors is an integer number (27647395632).

Almost surely, 2^220406162503 is an apocalyptic number.

220406162503 is a deficient number, since it is larger than the sum of its proper divisors (773002553).

220406162503 is an equidigital number, since it uses as much as digits as its factorization.

220406162503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556025.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 220406162503 its reverse (305261604022), we get a palindrome (525667766525).

The spelling of 220406162503 in words is "two hundred twenty billion, four hundred six million, one hundred sixty-two thousand, five hundred three".