27775578152 has 32 divisors (see below), whose sum is σ = 61439070720. Its totient is φ = 11519824320.

The previous prime is 27775578133. The next prime is 27775578157. The reversal of 27775578152 is 25187557772.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (27775578157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7998143 + ... + 8001614.

It is an arithmetic number, because the mean of its divisors is an integer number (1919970960).

Almost surely, 2^27775578152 is an apocalyptic number.

It is an amenable number.

27775578152 is an abundant number, since it is smaller than the sum of its proper divisors (33663492568).

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

27775578152 is a wasteful number, since it uses less digits than its factorization.

27775578152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15999801 (or 15999797 counting only the distinct ones).

The product of its digits is 9604000, while the sum is 56.

The spelling of 27775578152 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred seventy-eight thousand, one hundred fifty-two".