23530554040 has 128 divisors (see below), whose sum is σ = 62726192640. Its totient is φ = 7775847936.

The previous prime is 23530554037. The next prime is 23530554067. The reversal of 23530554040 is 4045503532.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23530553993 and 23530554011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1097907 + ... + 1119133.

It is an arithmetic number, because the mean of its divisors is an integer number (490048380).

Almost surely, 2^23530554040 is an apocalyptic number.

23530554040 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 23530554040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31363096320).

23530554040 is an abundant number, since it is smaller than the sum of its proper divisors (39195638600).

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

23530554040 is a wasteful number, since it uses less digits than its factorization.

23530554040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21389 (or 21385 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

The spelling of 23530554040 in words is "twenty-three billion, five hundred thirty million, five hundred fifty-four thousand, forty".