1911872791136 has 192 divisors, whose sum is σ = 5040584640000. Its totient is φ = 705680156160.

The previous prime is 1911872791123. The next prime is 1911872791181. The reversal of 1911872791136 is 6311972781191.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1877270 + ... + 2710698.

It is an arithmetic number, because the mean of its divisors is an integer number (26253045000).

Almost surely, 2^{1911872791136} is an apocalyptic number.

1911872791136 is a gapful number since it is divisible by the number (16) 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 1911872791136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520292320000).

1911872791136 is an abundant number, since it is smaller than the sum of its proper divisors (3128711848864).

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

1911872791136 is a wasteful number, since it uses less digits than its factorization.

1911872791136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833490 (or 833468 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 56.

The spelling of 1911872791136 in words is "one trillion, nine hundred eleven billion, eight hundred seventy-two million, seven hundred ninety-one thousand, one hundred thirty-six".