23218903533420 has 288 divisors, whose sum is σ = 83274718101120. Its totient is φ = 5123745607680.

The previous prime is 23218903533379. The next prime is 23218903533433. The reversal of 23218903533420 is 2433530981232.

23218903533420 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 8 + 90 + 3 + 533 + 4 + 20 = 666.

It is a super-2 number, since 2×23218903533420² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 675717040 + ... + 675751400.

It is an arithmetic number, because the mean of its divisors is an integer number (289148326740).

Almost surely, 2^{23218903533420} is an apocalyptic number.

23218903533420 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 23218903533420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41637359050560).

23218903533420 is an abundant number, since it is smaller than the sum of its proper divisors (60055814567700).

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

23218903533420 is a wasteful number, since it uses less digits than its factorization.

23218903533420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52905 (or 52900 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 23218903533420 in words is "twenty-three trillion, two hundred eighteen billion, nine hundred three million, five hundred thirty-three thousand, four hundred twenty".