2620212406644 has 96 divisors (see below), whose sum is σ = 7046383138816. Its totient is φ = 742312771200.

The previous prime is 2620212406613. The next prime is 2620212406649. The reversal of 2620212406644 is 4466042120262.

It is a super-2 number, since 2×2620212406644² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620212406649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6749322 + ... + 7126974.

Almost surely, 2^{2620212406644} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2620212406644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3523191569408).

2620212406644 is an abundant number, since it is smaller than the sum of its proper divisors (4426170732172).

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

2620212406644 is a wasteful number, since it uses less digits than its factorization.

2620212406644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378365 (or 378363 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 2620212406644 in words is "two trillion, six hundred twenty billion, two hundred twelve million, four hundred six thousand, six hundred forty-four".