27731607453 has 48 divisors (see below), whose sum is σ = 46420545600. Its totient is φ = 15776259840.

The previous prime is 27731607451. The next prime is 27731607467. The reversal of 27731607453 is 35470613772.

27731607453 is a `hidden beast` number, since 2 + 7 + 7 + 31 + 607 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 27731607453 - 2¹ = 27731607451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27731607399 and 27731607408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27731607451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137401 + ... + 272657.

It is an arithmetic number, because the mean of its divisors is an integer number (967094700).

Almost surely, 2^27731607453 is an apocalyptic number.

It is an amenable number.

27731607453 is a deficient number, since it is larger than the sum of its proper divisors (18688938147).

27731607453 is a wasteful number, since it uses less digits than its factorization.

27731607453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135402 (or 135399 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 27731607453 in words is "twenty-seven billion, seven hundred thirty-one million, six hundred seven thousand, four hundred fifty-three".