6435213457 has 8 divisors (see below), whose sum is σ = 6570993096. Its totient is φ = 6300721152.

The previous prime is 6435213451. The next prime is 6435213467. The reversal of 6435213457 is 7543125346.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1239110401 + 5196103056 = 35201^2 + 72084^2 .

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 6435213457 - 2⁷ = 6435213329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6435213451) 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, 311728 + ... + 331729.

It is an arithmetic number, because the mean of its divisors is an integer number (821374137).

Almost surely, 2^6435213457 is an apocalyptic number.

It is an amenable number.

6435213457 is a deficient number, since it is larger than the sum of its proper divisors (135779639).

6435213457 is a wasteful number, since it uses less digits than its factorization.

6435213457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643667.

The product of its digits is 302400, while the sum is 40.

The square root of 6435213457 is about 80219.7822048901. The cubic root of 6435213457 is about 1860.0344404345.

The spelling of 6435213457 in words is "six billion, four hundred thirty-five million, two hundred thirteen thousand, four hundred fifty-seven".