6401836824 has 16 divisors (see below), whose sum is σ = 16004592120. Its totient is φ = 2133945600.

The previous prime is 6401836817. The next prime is 6401836871. The reversal of 6401836824 is 4286381046.

It is a super-2 number, since 2×6401836824² = 81967029442244813952, which contains 22 as substring.

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, 133371577 + ... + 133371624.

Almost surely, 2^6401836824 is an apocalyptic number.

It is an amenable number.

6401836824 is an abundant number, since it is smaller than the sum of its proper divisors (9602755296).

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

6401836824 is a wasteful number, since it uses less digits than its factorization.

6401836824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266743210 (or 266743206 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 6401836824 is about 80011.4793264067. The cubic root of 6401836824 is about 1856.8131369087.

The spelling of 6401836824 in words is "six billion, four hundred one million, eight hundred thirty-six thousand, eight hundred twenty-four".