6505002155121 has 32 divisors (see below), whose sum is σ = 8771081932800. Its totient is φ = 4288076083200.

The previous prime is 6505002155083. The next prime is 6505002155123. The reversal of 6505002155121 is 1215512005056.

It is not a de Polignac number, because 6505002155121 - 2¹⁴ = 6505002138737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6505002155123) by changing a digit.

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, 279208945 + ... + 279232241.

It is an arithmetic number, because the mean of its divisors is an integer number (274096310400).

Almost surely, 2^{6505002155121} is an apocalyptic number.

It is an amenable number.

6505002155121 is a deficient number, since it is larger than the sum of its proper divisors (2266079777679).

6505002155121 is a wasteful number, since it uses less digits than its factorization.

6505002155121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26269.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 6505002155121 in words is "six trillion, five hundred five billion, two million, one hundred fifty-five thousand, one hundred twenty-one".