23154553043320 has 128 divisors (see below), whose sum is σ = 55396316067840. Its totient is φ = 8680059832320.

The previous prime is 23154553043311. The next prime is 23154553043359. The reversal of 23154553043320 is 2334035545132.

It is a super-2 number, since 2×23154553043320² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426148555 + ... + 426202885.

It is an arithmetic number, because the mean of its divisors is an integer number (432783719280).

Almost surely, 2^{23154553043320} is an apocalyptic number.

23154553043320 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 23154553043320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27698158033920).

23154553043320 is an abundant number, since it is smaller than the sum of its proper divisors (32241763024520).

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

23154553043320 is a wasteful number, since it uses less digits than its factorization.

23154553043320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57005 (or 57001 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 40.

Adding to 23154553043320 its reverse (2334035545132), we get a palindrome (25488588588452).

The spelling of 23154553043320 in words is "twenty-three trillion, one hundred fifty-four billion, five hundred fifty-three million, forty-three thousand, three hundred twenty".