16231540432 has 20 divisors (see below), whose sum is σ = 33298528356. Its totient is φ = 7638371840.

The previous prime is 16231540379. The next prime is 16231540433. The reversal of 16231540432 is 23404513261.

It can be written as a sum of positive squares in 2 ways, for example, as 10632909456 + 5598630976 = 103116^2 + 74824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16231540394 and 16231540403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231540433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29837119 + ... + 29837662.

Almost surely, 2^16231540432 is an apocalyptic number.

It is an amenable number.

16231540432 is an abundant number, since it is smaller than the sum of its proper divisors (17066987924).

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

16231540432 is a wasteful number, since it uses less digits than its factorization.

16231540432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59674806 (or 59674800 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 16231540432 in words is "sixteen billion, two hundred thirty-one million, five hundred forty thousand, four hundred thirty-two".