647474848538 has 16 divisors (see below), whose sum is σ = 1112274132480. Its totient is φ = 276909908496.

The previous prime is 647474848523. The next prime is 647474848577. The reversal of 647474848538 is 835848474746.

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, 48269081 + ... + 48282492.

It is an arithmetic number, because the mean of its divisors is an integer number (69517133280).

Almost surely, 2^647474848538 is an apocalyptic number.

647474848538 is a deficient number, since it is larger than the sum of its proper divisors (464799283942).

647474848538 is a wasteful number, since it uses less digits than its factorization.

647474848538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96552061.

The product of its digits is 578027520, while the sum is 68.

The spelling of 647474848538 in words is "six hundred forty-seven billion, four hundred seventy-four million, eight hundred forty-eight thousand, five hundred thirty-eight".