6445432577 has 8 divisors (see below), whose sum is σ = 6726476736. Its totient is φ = 6164455792.

The previous prime is 6445432559. The next prime is 6445432579. The reversal of 6445432577 is 7752345446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6445432577 - 2²⁴ = 6428655361 is a prime.

It is a super-2 number, since 2×6445432577² = 83087202209305721858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6445432579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337478 + ... + 356064.

It is an arithmetic number, because the mean of its divisors is an integer number (840809592).

Almost surely, 2^6445432577 is an apocalyptic number.

It is an amenable number.

6445432577 is a deficient number, since it is larger than the sum of its proper divisors (281044159).

6445432577 is a wasteful number, since it uses less digits than its factorization.

6445432577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33687.

The product of its digits is 2822400, while the sum is 47.

The square root of 6445432577 is about 80283.4514517158. The cubic root of 6445432577 is about 1861.0184980533.

The spelling of 6445432577 in words is "six billion, four hundred forty-five million, four hundred thirty-two thousand, five hundred seventy-seven".