405272299653376 has 27 divisors (see below), whose sum is σ = 808962147332563. Its totient is φ = 202635988775680.

The previous prime is 405272299653323. The next prime is 405272299653383. The reversal of 405272299653376 is 673356992272504.

The square root of 405272299653376 is 20131376.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 321472911 + ... + 322731121.

Almost surely, 2^{405272299653376} is an apocalyptic number.

405272299653376 is the 20131376-th square number.

It is an amenable number.

405272299653376 is a deficient number, since it is larger than the sum of its proper divisors (403689847679187).

405272299653376 is an frugal number, since it uses more digits than its factorization.

405272299653376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516438 (or 1258213 counting only the distinct ones).

The product of its (nonzero) digits is 1028764800, while the sum is 70.

The spelling of 405272299653376 in words is "four hundred five trillion, two hundred seventy-two billion, two hundred ninety-nine million, six hundred fifty-three thousand, three hundred seventy-six".