12731404455 has 48 divisors (see below), whose sum is σ = 27513068544. Its totient is φ = 5290971840.

The previous prime is 12731404451. The next prime is 12731404457. The reversal of 12731404455 is 55440413721.

12731404455 is a `hidden beast` number, since 1 + 2 + 73 + 140 + 445 + 5 = 666.

It is not a de Polignac number, because 12731404455 - 2² = 12731404451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731404451) 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, 1833679 + ... + 1840608.

It is an arithmetic number, because the mean of its divisors is an integer number (573188928).

Almost surely, 2^12731404455 is an apocalyptic number.

12731404455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12731404455 is an abundant number, since it is smaller than the sum of its proper divisors (14781664089).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12731404455 is a wasteful number, since it uses less digits than its factorization.

12731404455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674316 (or 3674313 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 12731404455 in words is "twelve billion, seven hundred thirty-one million, four hundred four thousand, four hundred fifty-five".