23102515455440 has 20 divisors (see below), whose sum is σ = 53713348434084. Its totient is φ = 9241006182144.

The previous prime is 23102515455413. The next prime is 23102515455451. The reversal of 23102515455440 is 4455451520132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7328368753216 + 15774146702224 = 2707096^2 + 3971668^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144390721517 + ... + 144390721676.

Almost surely, 2^{23102515455440} is an apocalyptic number.

23102515455440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23102515455440 is an abundant number, since it is smaller than the sum of its proper divisors (30610832978644).

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

23102515455440 is a wasteful number, since it uses less digits than its factorization.

23102515455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288781443206 (or 288781443200 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 23102515455440 its reverse (4455451520132), we get a palindrome (27557966975572).

The spelling of 23102515455440 in words is "twenty-three trillion, one hundred two billion, five hundred fifteen million, four hundred fifty-five thousand, four hundred forty".