647407138127 has 8 divisors (see below), whose sum is σ = 690887471616. Its totient is φ = 604526533632.

The previous prime is 647407138061. The next prime is 647407138139. The reversal of 647407138127 is 721831704746.

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 647407138127 - 2¹⁴ = 647407121743 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 (647407138927) 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, 149930018 + ... + 149934335.

It is an arithmetic number, because the mean of its divisors is an integer number (86360933952).

Almost surely, 2^647407138127 is an apocalyptic number.

647407138127 is a deficient number, since it is larger than the sum of its proper divisors (43480333489).

647407138127 is a wasteful number, since it uses less digits than its factorization.

647407138127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299864497.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 647407138127 in words is "six hundred forty-seven billion, four hundred seven million, one hundred thirty-eight thousand, one hundred twenty-seven".