6515250137556 has 48 divisors (see below), whose sum is σ = 15719109170688. Its totient is φ = 2098149350400.

The previous prime is 6515250137549. The next prime is 6515250137569. The reversal of 6515250137556 is 6557310525156.

It is a junction number, because it is equal to n+sod(n) for n = 6515250137499 and 6515250137508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14546785 + ... + 14987976.

It is an arithmetic number, because the mean of its divisors is an integer number (327481441056).

Almost surely, 2^{6515250137556} is an apocalyptic number.

It is an amenable number.

6515250137556 is an abundant number, since it is smaller than the sum of its proper divisors (9203859033132).

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

6515250137556 is a wasteful number, since it uses less digits than its factorization.

6515250137556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29535392 (or 29535390 counting only the distinct ones).

The product of its (nonzero) digits is 4725000, while the sum is 51.

The spelling of 6515250137556 in words is "six trillion, five hundred fifteen billion, two hundred fifty million, one hundred thirty-seven thousand, five hundred fifty-six".