6453432656 has 20 divisors (see below), whose sum is σ = 13640210304. Its totient is φ = 2933378400.

The previous prime is 6453432649. The next prime is 6453432691. The reversal of 6453432656 is 6562343546.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 18333440 + ... + 18333791.

Almost surely, 2^6453432656 is an apocalyptic number.

It is an amenable number.

6453432656 is an abundant number, since it is smaller than the sum of its proper divisors (7186777648).

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

6453432656 is a wasteful number, since it uses less digits than its factorization.

6453432656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36667250 (or 36667244 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 44.

The square root of 6453432656 is about 80333.2599612390. The cubic root of 6453432656 is about 1861.7881458766.

The spelling of 6453432656 in words is "six billion, four hundred fifty-three million, four hundred thirty-two thousand, six hundred fifty-six".