2138047591680 has 3456 divisors, whose sum is σ = 10593093772800. Its totient is φ = 406332702720.

The previous prime is 2138047591663. The next prime is 2138047591709. The reversal of 2138047591680 is 861957408312.

2138047591680 is a `hidden beast` number, since 2 + 1 + 3 + 8 + 0 + 47 + 591 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3456).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 19615115466 + ... + 19615115574.

It is an arithmetic number, because the mean of its divisors is an integer number (3065131300).

It is a 2-persistent number, because it is pandigital, and so is 2⋅2138047591680 = 4276095183360, but 3⋅2138047591680 = 6414142775040 is not.

Almost surely, 2^{2138047591680} is an apocalyptic number.

2138047591680 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 2138047591680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5296546886400).

2138047591680 is an abundant number, since it is smaller than the sum of its proper divisors (8455046181120).

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

2138047591680 is a wasteful number, since it uses less digits than its factorization.

2138047591680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 2138047591680 in words is "two trillion, one hundred thirty-eight billion, forty-seven million, five hundred ninety-one thousand, six hundred eighty".