20713249338047 has 8 divisors (see below), whose sum is σ = 24249657761952. Its totient is φ = 17321184115200.

The previous prime is 20713249338013. The next prime is 20713249338073. The reversal of 20713249338047 is 74083394231702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20713249338047 - 2⁸ = 20713249337791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20713249338047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713249338077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36085799954 + ... + 36085800527.

It is an arithmetic number, because the mean of its divisors is an integer number (3031207220244).

Almost surely, 2^{20713249338047} is an apocalyptic number.

20713249338047 is a deficient number, since it is larger than the sum of its proper divisors (3536408423905).

20713249338047 is an equidigital number, since it uses as much as digits as its factorization.

20713249338047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72171600529.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 20713249338047 in words is "twenty trillion, seven hundred thirteen billion, two hundred forty-nine million, three hundred thirty-eight thousand, forty-seven".