27952254979 has 4 divisors (see below), whose sum is σ = 30493369080. Its totient is φ = 25411140880.

The previous prime is 27952254973. The next prime is 27952254989. The reversal of 27952254979 is 97945225972.

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 27952254979 - 2¹¹ = 27952252931 is a prime.

It is a super-2 number, since 2×27952254979² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27952254973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270557034 + ... + 1270557055.

It is an arithmetic number, because the mean of its divisors is an integer number (7623342270).

Almost surely, 2^27952254979 is an apocalyptic number.

27952254979 is a deficient number, since it is larger than the sum of its proper divisors (2541114101).

27952254979 is a wasteful number, since it uses less digits than its factorization.

27952254979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541114100.

The product of its digits is 28576800, while the sum is 61.

The spelling of 27952254979 in words is "twenty-seven billion, nine hundred fifty-two million, two hundred fifty-four thousand, nine hundred seventy-nine".