27145308782 has 32 divisors (see below), whose sum is σ = 43762699008. Its totient is φ = 12604320000.

The previous prime is 27145308781. The next prime is 27145308787. The reversal of 27145308782 is 28780354172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27145308781) 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 15 ways as a sum of consecutive naturals, for example, 67532 + ... + 242592.

It is an arithmetic number, because the mean of its divisors is an integer number (1367584344).

Almost surely, 2^27145308782 is an apocalyptic number.

27145308782 is a deficient number, since it is larger than the sum of its proper divisors (16617390226).

27145308782 is a wasteful number, since it uses less digits than its factorization.

27145308782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175196.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 27145308782 in words is "twenty-seven billion, one hundred forty-five million, three hundred eight thousand, seven hundred eighty-two".