20470245704543 has 2 divisors, whose sum is σ = 20470245704544. Its totient is φ = 20470245704542.

The previous prime is 20470245704429. The next prime is 20470245704603. The reversal of 20470245704543 is 34540754207402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20470245704543 - 2¹⁶ = 20470245639007 is a prime.

It is a super-2 number, since 2×20470245704543² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20470245764543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10235122852271 + 10235122852272.

It is an arithmetic number, because the mean of its divisors is an integer number (10235122852272).

Almost surely, 2^{20470245704543} is an apocalyptic number.

20470245704543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20470245704543 is an equidigital number, since it uses as much as digits as its factorization.

20470245704543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3763200, while the sum is 47.

The spelling of 20470245704543 in words is "twenty trillion, four hundred seventy billion, two hundred forty-five million, seven hundred four thousand, five hundred forty-three".