647361420505 has 8 divisors (see below), whose sum is σ = 784375780032. Its totient is φ = 512861086128.

The previous prime is 647361420473. The next prime is 647361420593. The reversal of 647361420505 is 505024163746.

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 647361420505 - 2⁵ = 647361420473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628505719 + ... + 628506748.

It is an arithmetic number, because the mean of its divisors is an integer number (98046972504).

Almost surely, 2^647361420505 is an apocalyptic number.

It is an amenable number.

647361420505 is a deficient number, since it is larger than the sum of its proper divisors (137014359527).

647361420505 is a wasteful number, since it uses less digits than its factorization.

647361420505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257012575.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 647361420505 in words is "six hundred forty-seven billion, three hundred sixty-one million, four hundred twenty thousand, five hundred five".