647514542149 has 4 divisors (see below), whose sum is σ = 647518216140. Its totient is φ = 647510868160.

The previous prime is 647514542141. The next prime is 647514542203. The reversal of 647514542149 is 941245415746.

647514542149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42530812900 + 604983729249 = 206230^2 + 777807^2 .

It is a cyclic number.

It is not a de Polignac number, because 647514542149 - 2³ = 647514542141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647514542096 and 647514542105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647514542141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558564 + ... + 1929805.

It is an arithmetic number, because the mean of its divisors is an integer number (161879554035).

Almost surely, 2^647514542149 is an apocalyptic number.

It is an amenable number.

647514542149 is a deficient number, since it is larger than the sum of its proper divisors (3673991).

647514542149 is a wasteful number, since it uses less digits than its factorization.

647514542149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673990.

The product of its digits is 4838400, while the sum is 52.

The spelling of 647514542149 in words is "six hundred forty-seven billion, five hundred fourteen million, five hundred forty-two thousand, one hundred forty-nine".