647335478450 has 48 divisors (see below), whose sum is σ = 1253021676480. Its totient is φ = 248508294720.

The previous prime is 647335478429. The next prime is 647335478467. The reversal of 647335478450 is 54874533746.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1094492 + ... + 1578791.

It is an arithmetic number, because the mean of its divisors is an integer number (26104618260).

Almost surely, 2^647335478450 is an apocalyptic number.

647335478450 is a deficient number, since it is larger than the sum of its proper divisors (605686198030).

647335478450 is a wasteful number, since it uses less digits than its factorization.

647335478450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673491 (or 2673486 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 56.

The spelling of 647335478450 in words is "six hundred forty-seven billion, three hundred thirty-five million, four hundred seventy-eight thousand, four hundred fifty".