6620020516534 has 16 divisors (see below), whose sum is σ = 9982650994272. Its totient is φ = 3292474203648.

The previous prime is 6620020516523. The next prime is 6620020516553. The reversal of 6620020516534 is 4356150200266.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2308927 + ... + 4309429.

It is an arithmetic number, because the mean of its divisors is an integer number (623915687142).

Almost surely, 2^{6620020516534} is an apocalyptic number.

6620020516534 is a deficient number, since it is larger than the sum of its proper divisors (3362630477738).

6620020516534 is a wasteful number, since it uses less digits than its factorization.

6620020516534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009271.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 6620020516534 in words is "six trillion, six hundred twenty billion, twenty million, five hundred sixteen thousand, five hundred thirty-four".