22511145323420 has 48 divisors (see below), whose sum is σ = 51276078749280. Its totient is φ = 8252010314496.

The previous prime is 22511145323383. The next prime is 22511145323461. The reversal of 22511145323420 is 2432354111522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311407487 + ... + 311479766.

It is an arithmetic number, because the mean of its divisors is an integer number (1068251640610).

Almost surely, 2^{22511145323420} is an apocalyptic number.

22511145323420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22511145323420 is an abundant number, since it is smaller than the sum of its proper divisors (28764933425860).

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

22511145323420 is a wasteful number, since it uses less digits than its factorization.

22511145323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622887414 (or 622887412 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 22511145323420 its reverse (2432354111522), we get a palindrome (24943499434942).

The spelling of 22511145323420 in words is "twenty-two trillion, five hundred eleven billion, one hundred forty-five million, three hundred twenty-three thousand, four hundred twenty".