20004431143576 has 32 divisors (see below), whose sum is σ = 40918902036480. Its totient is φ = 9092757152800.

The previous prime is 20004431143531. The next prime is 20004431143633. The reversal of 20004431143576 is 67534113440002.

It is a super-2 number, since 2×20004431143576² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 2834421 + ... + 6931291.

It is an arithmetic number, because the mean of its divisors is an integer number (1278715688640).

Almost surely, 2^{20004431143576} is an apocalyptic number.

It is an amenable number.

20004431143576 is an abundant number, since it is smaller than the sum of its proper divisors (20914470892904).

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

20004431143576 is a wasteful number, since it uses less digits than its factorization.

20004431143576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152375 (or 4152371 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

Adding to 20004431143576 its reverse (67534113440002), we get a palindrome (87538544583578).

The spelling of 20004431143576 in words is "twenty trillion, four billion, four hundred thirty-one million, one hundred forty-three thousand, five hundred seventy-six".