220423402505400 has 192 divisors, whose sum is σ = 685188328994400. Its totient is φ = 58618236764160.

The previous prime is 220423402505381. The next prime is 220423402505413. The reversal of 220423402505400 is 4505204324022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6413419416 + ... + 6413453784.

Almost surely, 2^{220423402505400} is an apocalyptic number.

220423402505400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220423402505400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342594164497200).

220423402505400 is an abundant number, since it is smaller than the sum of its proper divisors (464764926489000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220423402505400 is a wasteful number, since it uses less digits than its factorization.

220423402505400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63418 (or 63409 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 220423402505400 its reverse (4505204324022), we get a palindrome (224928606829422).

The spelling of 220423402505400 in words is "two hundred twenty trillion, four hundred twenty-three billion, four hundred two million, five hundred five thousand, four hundred".