27657400773 has 4 divisors (see below), whose sum is σ = 36876534368. Its totient is φ = 18438267180.

The previous prime is 27657400769. The next prime is 27657400777. The reversal of 27657400773 is 37700475672.

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 (27657400769) and next prime (27657400777).

It is not a de Polignac number, because 27657400773 - 2² = 27657400769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27657400777) 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, 4609566793 + ... + 4609566798.

It is an arithmetic number, because the mean of its divisors is an integer number (9219133592).

Almost surely, 2^27657400773 is an apocalyptic number.

It is an amenable number.

27657400773 is a deficient number, since it is larger than the sum of its proper divisors (9219133595).

27657400773 is an equidigital number, since it uses as much as digits as its factorization.

27657400773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219133594.

The product of its (nonzero) digits is 1728720, while the sum is 48.

The spelling of 27657400773 in words is "twenty-seven billion, six hundred fifty-seven million, four hundred thousand, seven hundred seventy-three".