2621989409180 has 48 divisors (see below), whose sum is σ = 5561342732736. Its totient is φ = 1038290572800.

The previous prime is 2621989409161. The next prime is 2621989409183. The reversal of 2621989409180 is 819049891262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621989409183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18365432 + ... + 18507648.

It is an arithmetic number, because the mean of its divisors is an integer number (115861306932).

Almost surely, 2^{2621989409180} is an apocalyptic number.

2621989409180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2621989409180 is an abundant number, since it is smaller than the sum of its proper divisors (2939353323556).

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

2621989409180 is a wasteful number, since it uses less digits than its factorization.

2621989409180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151454 (or 151452 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 59.

The spelling of 2621989409180 in words is "two trillion, six hundred twenty-one billion, nine hundred eighty-nine million, four hundred nine thousand, one hundred eighty".