21332543031378 has 24 divisors (see below), whose sum is σ = 48939363425628. Its totient is φ = 6692562519552.

The previous prime is 21332543031353. The next prime is 21332543031403. The reversal of 21332543031378 is 87313034523312.

21332543031378 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 2 + 543 + 0 + 31 + 3 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (21332543031353) and next prime (21332543031403).

It can be written as a sum of positive squares in 2 ways, for example, as 17505914576049 + 3826628455329 = 4184007^2 + 1956177^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34857096151 + ... + 34857096762.

Almost surely, 2^{21332543031378} is an apocalyptic number.

21332543031378 is an abundant number, since it is smaller than the sum of its proper divisors (27606820394250).

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

21332543031378 is a wasteful number, since it uses less digits than its factorization.

21332543031378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69714192938 (or 69714192935 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 21332543031378 in words is "twenty-one trillion, three hundred thirty-two billion, five hundred forty-three million, thirty-one thousand, three hundred seventy-eight".