401216381464 has 16 divisors (see below), whose sum is σ = 791874437400. Its totient is φ = 190049864832.

The previous prime is 401216381437. The next prime is 401216381497. The reversal of 401216381464 is 464183612104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319790577 + ... + 1319790880.

Almost surely, 2^401216381464 is an apocalyptic number.

It is an amenable number.

401216381464 is a deficient number, since it is larger than the sum of its proper divisors (390658055936).

401216381464 is a wasteful number, since it uses less digits than its factorization.

401216381464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639581482 (or 2639581478 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

Adding to 401216381464 its reverse (464183612104), we get a palindrome (865399993568).

The spelling of 401216381464 in words is "four hundred one billion, two hundred sixteen million, three hundred eighty-one thousand, four hundred sixty-four".