2620163121500 has 96 divisors (see below), whose sum is σ = 5957607941376. Its totient is φ = 1005769612800.

The previous prime is 2620163121449. The next prime is 2620163121509. The reversal of 2620163121500 is 51213610262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620163121509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380429 + ... + 2320571.

It is an arithmetic number, because the mean of its divisors is an integer number (62058416056).

Almost surely, 2^{2620163121500} is an apocalyptic number.

2620163121500 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 2620163121500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2978803970688).

2620163121500 is an abundant number, since it is smaller than the sum of its proper divisors (3337444819876).

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

2620163121500 is a wasteful number, since it uses less digits than its factorization.

2620163121500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940272 (or 1940260 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 2620163121500 its reverse (51213610262), we get a palindrome (2671376731762).

The spelling of 2620163121500 in words is "two trillion, six hundred twenty billion, one hundred sixty-three million, one hundred twenty-one thousand, five hundred".