20467403623451 has 2 divisors, whose sum is σ = 20467403623452. Its totient is φ = 20467403623450.

The previous prime is 20467403623423. The next prime is 20467403623477. The reversal of 20467403623451 is 15432630476402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20467403623451 - 2³⁸ = 20192525716507 is a prime.

It is a super-2 number, since 2×20467403623451² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20467403623396 and 20467403623405.

It is not a weakly prime, because it can be changed into another prime (20467403653451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233701811725 + 10233701811726.

It is an arithmetic number, because the mean of its divisors is an integer number (10233701811726).

Almost surely, 2^{20467403623451} is an apocalyptic number.

20467403623451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20467403623451 is an equidigital number, since it uses as much as digits as its factorization.

20467403623451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 47.

The spelling of 20467403623451 in words is "twenty trillion, four hundred sixty-seven billion, four hundred three million, six hundred twenty-three thousand, four hundred fifty-one".