27751216507 has 8 divisors (see below), whose sum is σ = 31737975296. Its totient is φ = 23770032552.

The previous prime is 27751216501. The next prime is 27751216543. The reversal of 27751216507 is 70561215772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27751216507 - 2¹⁵ = 27751183739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27751216501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383033 + ... + 1402954.

It is an arithmetic number, because the mean of its divisors is an integer number (3967246912).

Almost surely, 2^27751216507 is an apocalyptic number.

27751216507 is a deficient number, since it is larger than the sum of its proper divisors (3986758789).

27751216507 is a wasteful number, since it uses less digits than its factorization.

27751216507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787417.

The product of its (nonzero) digits is 205800, while the sum is 43.

The spelling of 27751216507 in words is "twenty-seven billion, seven hundred fifty-one million, two hundred sixteen thousand, five hundred seven".