6405031612 has 12 divisors (see below), whose sum is σ = 12810063280. Its totient is φ = 2745013536.

The previous prime is 6405031597. The next prime is 6405031621. The reversal of 6405031612 is 2161305046.

6405031612 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 228751129 = 6405031612 / (6 + 4 + 0 + 5 + 0 + 3 + 1 + 6 + 1 + 2).

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, 114375537 + ... + 114375592.

Almost surely, 2^6405031612 is an apocalyptic number.

It is an amenable number.

6405031612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6405031612 is a wasteful number, since it uses less digits than its factorization.

6405031612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228751140 (or 228751138 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6405031612 is about 80031.4413964912. The cubic root of 6405031612 is about 1857.1219617023.

Adding to 6405031612 its reverse (2161305046), we get a palindrome (8566336658).

The spelling of 6405031612 in words is "six billion, four hundred five million, thirty-one thousand, six hundred twelve".