27878071052 has 96 divisors (see below), whose sum is σ = 53978870400. Its totient is φ = 12521226240.

The previous prime is 27878071033. The next prime is 27878071057. The reversal of 27878071052 is 25017087872.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27878070988 and 27878071006.

It is not an unprimeable number, because it can be changed into a prime (27878071057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144445868 + ... + 144446060.

It is an arithmetic number, because the mean of its divisors is an integer number (562279900).

Almost surely, 2^27878071052 is an apocalyptic number.

It is an amenable number.

27878071052 is a deficient number, since it is larger than the sum of its proper divisors (26100799348).

27878071052 is a wasteful number, since it uses less digits than its factorization.

27878071052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 27878071052 in words is "twenty-seven billion, eight hundred seventy-eight million, seventy-one thousand, fifty-two".