20154043532 has 12 divisors (see below), whose sum is σ = 40308087120. Its totient is φ = 8637447216.

The previous prime is 20154043531. The next prime is 20154043573. The reversal of 20154043532 is 23534045102.

It is a happy number.

20154043532 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20154043495 and 20154043504.

It is not an unprimeable number, because it can be changed into a prime (20154043531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359893607 + ... + 359893662.

It is an arithmetic number, because the mean of its divisors is an integer number (3359007260).

Almost surely, 2^20154043532 is an apocalyptic number.

It is an amenable number.

20154043532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20154043532 is a wasteful number, since it uses less digits than its factorization.

20154043532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719787280 (or 719787278 counting only the distinct ones).

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

Adding to 20154043532 its reverse (23534045102), we get a palindrome (43688088634).

The spelling of 20154043532 in words is "twenty billion, one hundred fifty-four million, forty-three thousand, five hundred thirty-two".