27854591440392 has 72 divisors (see below), whose sum is σ = 76889762545050. Its totient is φ = 9109677637632.

The previous prime is 27854591440307. The next prime is 27854591440397. The reversal of 27854591440392 is 29304419545872.

It is a happy number.

27854591440392 is a `hidden beast` number, since 2 + 7 + 8 + 5 + 4 + 591 + 4 + 4 + 0 + 39 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 21744371043396 + 6110220396996 = 4663086^2 + 2471886^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×27854591440392² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27854591440397) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 68660217 + ... + 69064712.

Almost surely, 2^{27854591440392} is an apocalyptic number.

It is an amenable number.

27854591440392 is an abundant number, since it is smaller than the sum of its proper divisors (49035171104658).

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

27854591440392 is a wasteful number, since it uses less digits than its factorization.

27854591440392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137725047 (or 137724987 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 27854591440392 in words is "twenty-seven trillion, eight hundred fifty-four billion, five hundred ninety-one million, four hundred forty thousand, three hundred ninety-two".