6820020135534 has 32 divisors (see below), whose sum is σ = 14377261582080. Its totient is φ = 2150791900992.

The previous prime is 6820020135503. The next prime is 6820020135541. The reversal of 6820020135534 is 4355310200286.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6820020135492 and 6820020135501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40174207 + ... + 40343610.

It is an arithmetic number, because the mean of its divisors is an integer number (449289424440).

Almost surely, 2^{6820020135534} is an apocalyptic number.

6820020135534 is an abundant number, since it is smaller than the sum of its proper divisors (7557241446546).

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

6820020135534 is a wasteful number, since it uses less digits than its factorization.

6820020135534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80518584.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 6820020135534 in words is "six trillion, eight hundred twenty billion, twenty million, one hundred thirty-five thousand, five hundred thirty-four".