27752717453 has 4 divisors (see below), whose sum is σ = 28709707740. Its totient is φ = 26795727168.

The previous prime is 27752717407. The next prime is 27752717467. The reversal of 27752717453 is 35471725772.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16446010564 + 11306706889 = 128242^2 + 106333^2 .

It is not a de Polignac number, because 27752717453 - 2¹⁶ = 27752651917 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 (27752717653) 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, 478495100 + ... + 478495157.

It is an arithmetic number, because the mean of its divisors is an integer number (7177426935).

Almost surely, 2^27752717453 is an apocalyptic number.

It is an amenable number.

27752717453 is a deficient number, since it is larger than the sum of its proper divisors (956990287).

27752717453 is an equidigital number, since it uses as much as digits as its factorization.

27752717453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956990286.

The product of its digits is 2881200, while the sum is 50.

The spelling of 27752717453 in words is "twenty-seven billion, seven hundred fifty-two million, seven hundred seventeen thousand, four hundred fifty-three".