27438608052 has 72 divisors (see below), whose sum is σ = 71225394240. Its totient is φ = 8901567360.

The previous prime is 27438607979. The next prime is 27438608053. The reversal of 27438608052 is 25080683472.

27438608052 is a `hidden beast` number, since 2 + 7 + 4 + 38 + 608 + 0 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 27438607989 and 27438608007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438608053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403449 + ... + 466527.

Almost surely, 2^27438608052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27438608052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35612697120).

27438608052 is an abundant number, since it is smaller than the sum of its proper divisors (43786786188).

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

27438608052 is a wasteful number, since it uses less digits than its factorization.

27438608052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63413 (or 63408 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 27438608052 in words is "twenty-seven billion, four hundred thirty-eight million, six hundred eight thousand, fifty-two".