15502663540 has 96 divisors (see below), whose sum is σ = 42177381120. Its totient is φ = 4648098816.

The previous prime is 15502663499. The next prime is 15502663549. The reversal of 15502663540 is 4536620551.

It is a self number, because there is not a number n which added to its sum of digits gives 15502663540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15502663549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189577 + ... + 258736.

It is an arithmetic number, because the mean of its divisors is an integer number (439347720).

Almost surely, 2^15502663540 is an apocalyptic number.

15502663540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15502663540 is an abundant number, since it is smaller than the sum of its proper divisors (26674717580).

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

15502663540 is a wasteful number, since it uses less digits than its factorization.

15502663540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448361 (or 448359 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 15502663540 in words is "fifteen billion, five hundred two million, six hundred sixty-three thousand, five hundred forty".