27775760542 has 4 divisors (see below), whose sum is σ = 41663640816. Its totient is φ = 13887880270.

The previous prime is 27775760531. The next prime is 27775760543. The reversal of 27775760542 is 24506757772.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27775760542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27775760543) 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 as a sum of consecutive naturals, namely, 6943940134 + ... + 6943940137.

It is an arithmetic number, because the mean of its divisors is an integer number (10415910204).

Almost surely, 2^27775760542 is an apocalyptic number.

27775760542 is a deficient number, since it is larger than the sum of its proper divisors (13887880274).

27775760542 is a wasteful number, since it uses less digits than its factorization.

27775760542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13887880273.

The product of its (nonzero) digits is 5762400, while the sum is 52.

The spelling of 27775760542 in words is "twenty-seven billion, seven hundred seventy-five million, seven hundred sixty thousand, five hundred forty-two".