20504026713444 has 48 divisors (see below), whose sum is σ = 47979266160000. Its totient is φ = 6815181770496.

The previous prime is 20504026713431. The next prime is 20504026713451. The reversal of 20504026713444 is 44431762040502.

It is a happy number.

It is a super-2 number, since 2×20504026713444² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20504026713396 and 20504026713405.

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, 13569672 + ... + 15004800.

It is an arithmetic number, because the mean of its divisors is an integer number (999568045000).

Almost surely, 2^{20504026713444} is an apocalyptic number.

It is an amenable number.

20504026713444 is an abundant number, since it is smaller than the sum of its proper divisors (27475239446556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20504026713444 is a wasteful number, since it uses less digits than its factorization.

20504026713444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438532 (or 1438530 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

Adding to 20504026713444 its reverse (44431762040502), we get a palindrome (64935788753946).

The spelling of 20504026713444 in words is "twenty trillion, five hundred four billion, twenty-six million, seven hundred thirteen thousand, four hundred forty-four".