16431515452 has 24 divisors (see below), whose sum is σ = 31402253232. Its totient is φ = 7461014400.

The previous prime is 16431515447. The next prime is 16431515459. The reversal of 16431515452 is 25451513461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16431515459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153999 + ... + 237862.

It is an arithmetic number, because the mean of its divisors is an integer number (1308427218).

Almost surely, 2^16431515452 is an apocalyptic number.

It is an amenable number.

16431515452 is a deficient number, since it is larger than the sum of its proper divisors (14970737780).

16431515452 is a wasteful number, since it uses less digits than its factorization.

16431515452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392829 (or 392827 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The spelling of 16431515452 in words is "sixteen billion, four hundred thirty-one million, five hundred fifteen thousand, four hundred fifty-two".