15250536540 has 36 divisors (see below), whose sum is σ = 46259961384. Its totient is φ = 4066809696.

The previous prime is 15250536533. The next prime is 15250536557. The reversal of 15250536540 is 4563505251.

15250536540 is a `hidden beast` number, since 1 + 5 + 250 + 5 + 365 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 15250536495 and 15250536504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42362422 + ... + 42362781.

Almost surely, 2^15250536540 is an apocalyptic number.

15250536540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15250536540 is an abundant number, since it is smaller than the sum of its proper divisors (31009424844).

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

15250536540 is a wasteful number, since it uses less digits than its factorization.

15250536540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84725218 (or 84725213 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 15250536540 in words is "fifteen billion, two hundred fifty million, five hundred thirty-six thousand, five hundred forty".