27812137640727 has 32 divisors (see below), whose sum is σ = 42598084849920. Its totient is φ = 15963101118720.

The previous prime is 27812137640723. The next prime is 27812137640747. The reversal of 27812137640727 is 72704673121872.

It is not a de Polignac number, because 27812137640727 - 2² = 27812137640723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27812137640723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5971608 + ... + 9554285.

It is an arithmetic number, because the mean of its divisors is an integer number (1331190151560).

Almost surely, 2^{27812137640727} is an apocalyptic number.

27812137640727 is a deficient number, since it is larger than the sum of its proper divisors (14785947209193).

27812137640727 is a wasteful number, since it uses less digits than its factorization.

27812137640727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15528783.

The product of its (nonzero) digits is 11063808, while the sum is 57.

The spelling of 27812137640727 in words is "twenty-seven trillion, eight hundred twelve billion, one hundred thirty-seven million, six hundred forty thousand, seven hundred twenty-seven".