27664902542 has 4 divisors (see below), whose sum is σ = 41497353816. Its totient is φ = 13832451270.

The previous prime is 27664902539. The next prime is 27664902547. The reversal of 27664902542 is 24520946672.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27664902547) 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, 6916225634 + ... + 6916225637.

It is an arithmetic number, because the mean of its divisors is an integer number (10374338454).

Almost surely, 2^27664902542 is an apocalyptic number.

27664902542 is a deficient number, since it is larger than the sum of its proper divisors (13832451274).

27664902542 is a wasteful number, since it uses less digits than its factorization.

27664902542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13832451273.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 27664902542 in words is "twenty-seven billion, six hundred sixty-four million, nine hundred two thousand, five hundred forty-two".