401271838516 has 12 divisors (see below), whose sum is σ = 702281906788. Its totient is φ = 200619865152.

The previous prime is 401271838507. The next prime is 401271838529. The reversal of 401271838516 is 615838172104.

It can be written as a sum of positive squares in 2 ways, for example, as 380693936016 + 20577902500 = 617004^2 + 143450^2 .

It is a super-2 number, since 2×401271838516² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3957201 + ... + 4057336.

Almost surely, 2^401271838516 is an apocalyptic number.

It is an amenable number.

401271838516 is a deficient number, since it is larger than the sum of its proper divisors (301010068272).

401271838516 is a wasteful number, since it uses less digits than its factorization.

401271838516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027058 (or 8027056 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 401271838516 in words is "four hundred one billion, two hundred seventy-one million, eight hundred thirty-eight thousand, five hundred sixteen".