10001643377047 has 4 divisors (see below), whose sum is σ = 11430449573776. Its totient is φ = 8572837180320.

The previous prime is 10001643377029. The next prime is 10001643377081. The reversal of 10001643377047 is 74077334610001.

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

It is a de Polignac number, because none of the positive numbers 2^k-10001643377047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001643376994 and 10001643377012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001643377017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714403098354 + ... + 714403098367.

It is an arithmetic number, because the mean of its divisors is an integer number (2857612393444).

Almost surely, 2^{10001643377047} is an apocalyptic number.

10001643377047 is a deficient number, since it is larger than the sum of its proper divisors (1428806196729).

10001643377047 is an equidigital number, since it uses as much as digits as its factorization.

10001643377047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428806196728.

The product of its (nonzero) digits is 296352, while the sum is 43.

Adding to 10001643377047 its reverse (74077334610001), we get a palindrome (84078977987048).

The spelling of 10001643377047 in words is "ten trillion, one billion, six hundred forty-three million, three hundred seventy-seven thousand, forty-seven".