6432257137 has 4 divisors (see below), whose sum is σ = 6438570480. Its totient is φ = 6425943796.

The previous prime is 6432257107. The next prime is 6432257287. The reversal of 6432257137 is 7317522346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6432257137 - 2³¹ = 4284773489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6432257137.

It is not an unprimeable number, because it can be changed into a prime (6432257107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3155143 + ... + 3157180.

It is an arithmetic number, because the mean of its divisors is an integer number (1609642620).

Almost surely, 2^6432257137 is an apocalyptic number.

It is an amenable number.

6432257137 is a deficient number, since it is larger than the sum of its proper divisors (6313343).

6432257137 is a wasteful number, since it uses less digits than its factorization.

6432257137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313342.

The product of its digits is 211680, while the sum is 40.

The square root of 6432257137 is about 80201.3537105204. The cubic root of 6432257137 is about 1859.7495651763.

The spelling of 6432257137 in words is "six billion, four hundred thirty-two million, two hundred fifty-seven thousand, one hundred thirty-seven".