2981849721136 has 160 divisors (see below), whose sum is σ = 7092984019968. Its totient is φ = 1196027320320.

The previous prime is 2981849721083. The next prime is 2981849721223. The reversal of 2981849721136 is 6311279481892.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4301620 + ... + 4946476.

Almost surely, 2^{2981849721136} is an apocalyptic number.

2981849721136 is a gapful number since it is divisible by the number (26) 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 2981849721136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3546492009984).

2981849721136 is an abundant number, since it is smaller than the sum of its proper divisors (4111134298832).

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

2981849721136 is a wasteful number, since it uses less digits than its factorization.

2981849721136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644979 (or 644973 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 61.

The spelling of 2981849721136 in words is "two trillion, nine hundred eighty-one billion, eight hundred forty-nine million, seven hundred twenty-one thousand, one hundred thirty-six".