20013653450434 has 16 divisors (see below), whose sum is σ = 34559551738368. Its totient is φ = 8514672165792.

The previous prime is 20013653450423. The next prime is 20013653450447. The reversal of 20013653450434 is 43405435631002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5217321714 + ... + 5217325549.

It is an arithmetic number, because the mean of its divisors is an integer number (2159971983648).

Almost surely, 2^{20013653450434} is an apocalyptic number.

20013653450434 is a deficient number, since it is larger than the sum of its proper divisors (14545898287934).

20013653450434 is a wasteful number, since it uses less digits than its factorization.

20013653450434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10434647409.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 20013653450434 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, four hundred fifty thousand, four hundred thirty-four".