16453132326440 has 64 divisors (see below), whose sum is σ = 39210610410000. Its totient is φ = 6191996203008.

The previous prime is 16453132326391. The next prime is 16453132326473. The reversal of 16453132326440 is 4462323135461.

It can be written as a sum of positive squares in 8 ways, for example, as 9235022610724 + 7218109715716 = 3038918^2 + 2686654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16453132326391 and 16453132326400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2163815 + ... + 6130934.

Almost surely, 2^{16453132326440} is an apocalyptic number.

16453132326440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16453132326440 is an abundant number, since it is smaller than the sum of its proper divisors (22757478083560).

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

16453132326440 is a wasteful number, since it uses less digits than its factorization.

16453132326440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8297694 (or 8297690 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 16453132326440 in words is "sixteen trillion, four hundred fifty-three billion, one hundred thirty-two million, three hundred twenty-six thousand, four hundred forty".