2102278905408 has 672 divisors, whose sum is σ = 6602553216000. Its totient is φ = 585201254400.

The previous prime is 2102278905383. The next prime is 2102278905443. The reversal of 2102278905408 is 8045098722012.

It is a super-2 number, since 2×2102278905408² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6023721618 + ... + 6023721966.

It is an arithmetic number, because the mean of its divisors is an integer number (9825228000).

Almost surely, 2^{2102278905408} 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 2102278905408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3301276608000).

2102278905408 is an abundant number, since it is smaller than the sum of its proper divisors (4500274310592).

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

2102278905408 is a wasteful number, since it uses less digits than its factorization.

2102278905408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 2102278905408 in words is "two trillion, one hundred two billion, two hundred seventy-eight million, nine hundred five thousand, four hundred eight".