27948584973 has 4 divisors (see below), whose sum is σ = 37264779968. Its totient is φ = 18632389980.

The previous prime is 27948584969. The next prime is 27948584977. The reversal of 27948584973 is 37948584972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (27948584969) and next prime (27948584977).

It is not a de Polignac number, because 27948584973 - 2² = 27948584969 is a prime.

It is a super-2 number, since 2×27948584973² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27948584977) 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, 4658097493 + ... + 4658097498.

It is an arithmetic number, because the mean of its divisors is an integer number (9316194992).

Almost surely, 2^27948584973 is an apocalyptic number.

It is an amenable number.

27948584973 is a deficient number, since it is larger than the sum of its proper divisors (9316194995).

27948584973 is an equidigital number, since it uses as much as digits as its factorization.

27948584973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316194994.

The product of its digits is 121927680, while the sum is 66.

Subtracting 27948584973 from its reverse (37948584972), we obtain a palindrome (9999999999).

The spelling of 27948584973 in words is "twenty-seven billion, nine hundred forty-eight million, five hundred eighty-four thousand, nine hundred seventy-three".