6511224421005 has 16 divisors (see below), whose sum is σ = 10418263972224. Its totient is φ = 3472551391680.

The previous prime is 6511224421001. The next prime is 6511224421019. The reversal of 6511224421005 is 5001244221156.

It is a happy number.

It is not a de Polignac number, because 6511224421005 - 2² = 6511224421001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511224421001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5821009 + ... + 6848838.

It is an arithmetic number, because the mean of its divisors is an integer number (651141498264).

Almost surely, 2^{6511224421005} is an apocalyptic number.

It is an amenable number.

6511224421005 is a deficient number, since it is larger than the sum of its proper divisors (3907039551219).

6511224421005 is a wasteful number, since it uses less digits than its factorization.

6511224421005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12704116.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 6511224421005 in words is "six trillion, five hundred eleven billion, two hundred twenty-four million, four hundred twenty-one thousand, five".