2620020555420 has 96 divisors (see below), whose sum is σ = 7455972851712. Its totient is φ = 687301636608.

The previous prime is 2620020555407. The next prime is 2620020555443. The reversal of 2620020555420 is 245550200262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 896629 + ... + 2458451.

It is an arithmetic number, because the mean of its divisors is an integer number (77666383872).

Almost surely, 2^{2620020555420} is an apocalyptic number.

2620020555420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2620020555420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3727986425856).

2620020555420 is an abundant number, since it is smaller than the sum of its proper divisors (4835952296292).

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

2620020555420 is a wasteful number, since it uses less digits than its factorization.

2620020555420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562291 (or 1562289 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 2620020555420 its reverse (245550200262), we get a palindrome (2865570755682).

The spelling of 2620020555420 in words is "two trillion, six hundred twenty billion, twenty million, five hundred fifty-five thousand, four hundred twenty".