2620256500400 has 360 divisors, whose sum is σ = 7914045989472. Its totient is φ = 816076800000.

The previous prime is 2620256500357. The next prime is 2620256500403. The reversal of 2620256500400 is 40056520262.

It is not an unprimeable number, because it can be changed into a prime (2620256500403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 654898400 + ... + 654902400.

Almost surely, 2^{2620256500400} is an apocalyptic number.

2620256500400 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 2620256500400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3957022994736).

2620256500400 is an abundant number, since it is smaller than the sum of its proper divisors (5293789489072).

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

2620256500400 is a wasteful number, since it uses less digits than its factorization.

2620256500400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981 (or 5959 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 2620256500400 in words is "two trillion, six hundred twenty billion, two hundred fifty-six million, five hundred thousand, four hundred".