20504455334 has 32 divisors (see below), whose sum is σ = 35032677120. Its totient is φ = 8909604000.

The previous prime is 20504455273. The next prime is 20504455369. The reversal of 20504455334 is 43355440502.

It is a junction number, because it is equal to n+sod(n) for n = 20504455294 and 20504455303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893909 + ... + 916559.

It is an arithmetic number, because the mean of its divisors is an integer number (1094771160).

Almost surely, 2^20504455334 is an apocalyptic number.

20504455334 is a deficient number, since it is larger than the sum of its proper divisors (14528221786).

20504455334 is a wasteful number, since it uses less digits than its factorization.

20504455334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24476.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 20504455334 its reverse (43355440502), we get a palindrome (63859895836).

The spelling of 20504455334 in words is "twenty billion, five hundred four million, four hundred fifty-five thousand, three hundred thirty-four".