2081896881240 has 256 divisors, whose sum is σ = 6886448824320. Its totient is φ = 499307005440.

The previous prime is 2081896881223. The next prime is 2081896881257. The reversal of 2081896881240 is 421886981802.

It is an interprime number because it is at equal distance from previous prime (2081896881223) and next prime (2081896881257).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147781477 + ... + 147795563.

It is an arithmetic number, because the mean of its divisors is an integer number (26900190720).

Almost surely, 2^{2081896881240} is an apocalyptic number.

2081896881240 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 2081896881240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3443224412160).

2081896881240 is an abundant number, since it is smaller than the sum of its proper divisors (4804551943080).

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

2081896881240 is a wasteful number, since it uses less digits than its factorization.

2081896881240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15302 (or 15298 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 57.

The spelling of 2081896881240 in words is "two trillion, eighty-one billion, eight hundred ninety-six million, eight hundred eighty-one thousand, two hundred forty".