2138823722880 has 256 divisors, whose sum is σ = 8157693902400. Its totient is φ = 526479630336.

The previous prime is 2138823722863. The next prime is 2138823722921. The reversal of 2138823722880 is 882273288312.

2138823722880 is a `hidden beast` number, since 2 + 1 + 388 + 2 + 37 + 228 + 8 + 0 = 666.

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 31 ways as a sum of consecutive naturals, for example, 4535919 + ... + 4985198.

Almost surely, 2^{2138823722880} is an apocalyptic number.

2138823722880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2138823722880 is an abundant number, since it is smaller than the sum of its proper divisors (6018870179520).

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

2138823722880 is a wasteful number, since it uses less digits than its factorization.

2138823722880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521158 (or 9521140 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 2138823722880 in words is "two trillion, one hundred thirty-eight billion, eight hundred twenty-three million, seven hundred twenty-two thousand, eight hundred eighty".