1647117461125 has 8 divisors (see below), whose sum is σ = 2055602591640. Its totient is φ = 1317693968800.

The previous prime is 1647117461117. The next prime is 1647117461131. The reversal of 1647117461125 is 5211647117461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6397280289 + 1640720180836 = 79983^2 + 1280906^2 .

It is not a de Polignac number, because 1647117461125 - 2³ = 1647117461117 is a prime.

It is a congruent 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, 6588469720 + ... + 6588469969.

It is an arithmetic number, because the mean of its divisors is an integer number (256950323955).

Almost surely, 2^{1647117461125} is an apocalyptic number.

It is an amenable number.

1647117461125 is a deficient number, since it is larger than the sum of its proper divisors (408485130515).

1647117461125 is an equidigital number, since it uses as much as digits as its factorization.

1647117461125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176939704 (or 13176939694 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The spelling of 1647117461125 in words is "one trillion, six hundred forty-seven billion, one hundred seventeen million, four hundred sixty-one thousand, one hundred twenty-five".