27145727453 has 8 divisors (see below), whose sum is σ = 29235389400. Its totient is φ = 25056283968.

The previous prime is 27145727369. The next prime is 27145727471. The reversal of 27145727453 is 35472754172.

It can be written as a sum of positive squares in 4 ways, for example, as 3780159289 + 23365568164 = 61483^2 + 152858^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27145727453 - 2²² = 27141533149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27145727398 and 27145727407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27145720453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278963 + ... + 363471.

It is an arithmetic number, because the mean of its divisors is an integer number (3654423675).

Almost surely, 2^27145727453 is an apocalyptic number.

It is an amenable number.

27145727453 is a deficient number, since it is larger than the sum of its proper divisors (2089661947).

27145727453 is a wasteful number, since it uses less digits than its factorization.

27145727453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109231.

The product of its digits is 1646400, while the sum is 47.

The spelling of 27145727453 in words is "twenty-seven billion, one hundred forty-five million, seven hundred twenty-seven thousand, four hundred fifty-three".