6432651632 has 20 divisors (see below), whose sum is σ = 13596286776. Its totient is φ = 2923932480.

The previous prime is 6432651629. The next prime is 6432651649. The reversal of 6432651632 is 2361562346.

It is a happy number.

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, 18274403 + ... + 18274754.

Almost surely, 2^6432651632 is an apocalyptic number.

It is an amenable number.

6432651632 is an abundant number, since it is smaller than the sum of its proper divisors (7163635144).

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

6432651632 is a wasteful number, since it uses less digits than its factorization.

6432651632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36549176 (or 36549170 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 6432651632 is about 80203.8130764367. The cubic root of 6432651632 is about 1859.7875843294.

The spelling of 6432651632 in words is "six billion, four hundred thirty-two million, six hundred fifty-one thousand, six hundred thirty-two".