6521105506152 has 128 divisors (see below), whose sum is σ = 16525881590400. Its totient is φ = 2144111689728.

The previous prime is 6521105506127. The next prime is 6521105506199. The reversal of 6521105506152 is 2516055011256.

It is a self number, because there is not a number n which added to its sum of digits gives 6521105506152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1886346408 + ... + 1886349864.

It is an arithmetic number, because the mean of its divisors is an integer number (129108449925).

Almost surely, 2^{6521105506152} is an apocalyptic number.

It is an amenable number.

6521105506152 is an abundant number, since it is smaller than the sum of its proper divisors (10004776084248).

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

6521105506152 is a wasteful number, since it uses less digits than its factorization.

6521105506152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035 (or 6031 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 6521105506152 in words is "six trillion, five hundred twenty-one billion, one hundred five million, five hundred six thousand, one hundred fifty-two".