20468435547 has 24 divisors (see below), whose sum is σ = 31932274944. Its totient is φ = 11424221424.

The previous prime is 20468435521. The next prime is 20468435549. The reversal of 20468435547 is 74553486402.

It is not a de Polignac number, because 20468435547 - 2⁷ = 20468435419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20468435496 and 20468435505.

It is not an unprimeable number, because it can be changed into a prime (20468435549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224743 + ... + 302400.

It is an arithmetic number, because the mean of its divisors is an integer number (1330511456).

Almost surely, 2^20468435547 is an apocalyptic number.

20468435547 is a deficient number, since it is larger than the sum of its proper divisors (11463839397).

20468435547 is an equidigital number, since it uses as much as digits as its factorization.

20468435547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527239 (or 527196 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 48.

The spelling of 20468435547 in words is "twenty billion, four hundred sixty-eight million, four hundred thirty-five thousand, five hundred forty-seven".