6500605001550 has 48 divisors (see below), whose sum is σ = 17587091354112. Its totient is φ = 1575904242400.

The previous prime is 6500605001503. The next prime is 6500605001557. The reversal of 6500605001550 is 551005060056.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6500605001557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1969878654 + ... + 1969881953.

It is an arithmetic number, because the mean of its divisors is an integer number (366397736544).

Almost surely, 2^{6500605001550} is an apocalyptic number.

6500605001550 is an abundant number, since it is smaller than the sum of its proper divisors (11086486352562).

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

6500605001550 is a wasteful number, since it uses less digits than its factorization.

6500605001550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939760633 (or 3939760628 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 6500605001550 in words is "six trillion, five hundred billion, six hundred five million, one thousand, five hundred fifty".