27929760479251 has 4 divisors (see below), whose sum is σ = 27929852608392. Its totient is φ = 27929668350112.

The previous prime is 27929760479227. The next prime is 27929760479279. The reversal of 27929760479251 is 15297406792972.

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

It is a cyclic number.

It is not a de Polignac number, because 27929760479251 - 2⁷ = 27929760479123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27929760470251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45608326 + ... + 46216651.

It is an arithmetic number, because the mean of its divisors is an integer number (6982463152098).

Almost surely, 2^{27929760479251} is an apocalyptic number.

27929760479251 is a deficient number, since it is larger than the sum of its proper divisors (92129141).

27929760479251 is an equidigital number, since it uses as much as digits as its factorization.

27929760479251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92129140.

The product of its (nonzero) digits is 240045120, while the sum is 70.

The spelling of 27929760479251 in words is "twenty-seven trillion, nine hundred twenty-nine billion, seven hundred sixty million, four hundred seventy-nine thousand, two hundred fifty-one".