15525515022340 has 48 divisors (see below), whose sum is σ = 32813905469184. Its totient is φ = 6170271699200.

The previous prime is 15525515022323. The next prime is 15525515022349. The reversal of 15525515022340 is 4322051552551.

It is a junction number, because it is equal to n+sod(n) for n = 15525515022293 and 15525515022302.

It is not an unprimeable number, because it can be changed into a prime (15525515022349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030476 + ... + 5930755.

It is an arithmetic number, because the mean of its divisors is an integer number (683623030608).

Almost surely, 2^{15525515022340} is an apocalyptic number.

15525515022340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15525515022340 is an abundant number, since it is smaller than the sum of its proper divisors (17288390446844).

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

15525515022340 is a wasteful number, since it uses less digits than its factorization.

15525515022340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7961868 (or 7961866 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

Adding to 15525515022340 its reverse (4322051552551), we get a palindrome (19847566574891).

The spelling of 15525515022340 in words is "fifteen trillion, five hundred twenty-five billion, five hundred fifteen million, twenty-two thousand, three hundred forty".