15252660540 has 144 divisors (see below), whose sum is σ = 49924982016. Its totient is φ = 3746995200.

The previous prime is 15252660463. The next prime is 15252660613. The reversal of 15252660540 is 4506625251.

15252660540 is a `hidden beast` number, since 1 + 5 + 2 + 5 + 2 + 6 + 605 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15252660495 and 15252660504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1212885 + ... + 1225395.

It is an arithmetic number, because the mean of its divisors is an integer number (346701264).

Almost surely, 2^15252660540 is an apocalyptic number.

15252660540 is a gapful number since it is divisible by the number (10) 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 15252660540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24962491008).

15252660540 is an abundant number, since it is smaller than the sum of its proper divisors (34672321476).

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

15252660540 is a wasteful number, since it uses less digits than its factorization.

15252660540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13060 (or 13055 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 15252660540 in words is "fifteen billion, two hundred fifty-two million, six hundred sixty thousand, five hundred forty".