23521043042140 has 192 divisors, whose sum is σ = 59698104238080. Its totient is φ = 7613587457280.

The previous prime is 23521043042113. The next prime is 23521043042209. The reversal of 23521043042140 is 4124034012532.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156499069 + ... + 156649291.

It is an arithmetic number, because the mean of its divisors is an integer number (310927626240).

Almost surely, 2^{23521043042140} is an apocalyptic number.

23521043042140 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 23521043042140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29849052119040).

23521043042140 is an abundant number, since it is smaller than the sum of its proper divisors (36177061195940).

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

23521043042140 is a wasteful number, since it uses less digits than its factorization.

23521043042140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151152 (or 151150 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 23521043042140 its reverse (4124034012532), we get a palindrome (27645077054672).

The spelling of 23521043042140 in words is "twenty-three trillion, five hundred twenty-one billion, forty-three million, forty-two thousand, one hundred forty".