2443800732381 has 6 divisors (see below), whose sum is σ = 3529934391230. Its totient is φ = 1629200488248.

The previous prime is 2443800732379. The next prime is 2443800732383. The reversal of 2443800732381 is 1832370083442.

2443800732381 is a `hidden beast` number, since 244 + 3 + 8 + 0 + 0 + 7 + 323 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (2443800732379) and next prime (2443800732383).

It can be written as a sum of positive squares in only one way, i.e., 2440859405625 + 2941326756 = 1562325^2 + 54234^2 .

It is not a de Polignac number, because 2443800732381 - 2¹ = 2443800732379 is a prime.

It is a super-2 number, since 2×2443800732381² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443800732383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135766707346 + ... + 135766707363.

Almost surely, 2^{2443800732381} is an apocalyptic number.

It is an amenable number.

2443800732381 is a deficient number, since it is larger than the sum of its proper divisors (1086133658849).

2443800732381 is a wasteful number, since it uses less digits than its factorization.

2443800732381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271533414715 (or 271533414712 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 2443800732381 in words is "two trillion, four hundred forty-three billion, eight hundred million, seven hundred thirty-two thousand, three hundred eighty-one".