6409503612 has 36 divisors (see below), whose sum is σ = 16205703696. Its totient is φ = 2135986560.

The previous prime is 6409503571. The next prime is 6409503641. The reversal of 6409503612 is 2163059046.

It is a happy number.

6409503612 is a `hidden beast` number, since 640 + 9 + 5 + 0 + 3 + 6 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 148537 + ... + 186767.

It is an arithmetic number, because the mean of its divisors is an integer number (450158436).

Almost surely, 2^6409503612 is an apocalyptic number.

It is an amenable number.

6409503612 is an abundant number, since it is smaller than the sum of its proper divisors (9796200084).

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

6409503612 is a wasteful number, since it uses less digits than its factorization.

6409503612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42898 (or 42893 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6409503612 is about 80059.3755409071. The cubic root of 6409503612 is about 1857.5540760046.

The spelling of 6409503612 in words is "six billion, four hundred nine million, five hundred three thousand, six hundred twelve".