20531054432 has 24 divisors (see below), whose sum is σ = 46194872976. Its totient is φ = 8799023232.

The previous prime is 20531054419. The next prime is 20531054461. The reversal of 20531054432 is 23445013502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20531054395 and 20531054404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45828023 + ... + 45828470.

It is an arithmetic number, because the mean of its divisors is an integer number (1924786374).

Almost surely, 2^20531054432 is an apocalyptic number.

It is an amenable number.

20531054432 is an abundant number, since it is smaller than the sum of its proper divisors (25663818544).

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

20531054432 is an equidigital number, since it uses as much as digits as its factorization.

20531054432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91656510 (or 91656502 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20531054432 its reverse (23445013502), we get a palindrome (43976067934).

The spelling of 20531054432 in words is "twenty billion, five hundred thirty-one million, fifty-four thousand, four hundred thirty-two".