1641266706447 has 12 divisors (see below), whose sum is σ = 2370732666120. Its totient is φ = 1094171301168.

The previous prime is 1641266706413. The next prime is 1641266706467. The reversal of 1641266706447 is 7446076621461.

1641266706447 is a `hidden beast` number, since 1 + 6 + 4 + 126 + 6 + 70 + 6 + 447 = 666.

It is not a de Polignac number, because 1641266706447 - 2⁶ = 1641266706383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641266706393 and 1641266706402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641266706467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1436704 + ... + 2312282.

It is an arithmetic number, because the mean of its divisors is an integer number (197561055510).

Almost surely, 2^{1641266706447} is an apocalyptic number.

1641266706447 is a deficient number, since it is larger than the sum of its proper divisors (729465959673).

1641266706447 is a wasteful number, since it uses less digits than its factorization.

1641266706447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083862 (or 1083859 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 1641266706447 in words is "one trillion, six hundred forty-one billion, two hundred sixty-six million, seven hundred six thousand, four hundred forty-seven".