64832197537 has 4 divisors (see below), whose sum is σ = 68244418480. Its totient is φ = 61419976596.

The previous prime is 64832197447. The next prime is 64832197559. The reversal of 64832197537 is 73579123846.

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 64832197537 - 2³⁵ = 30472459169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64832197567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706110443 + ... + 1706110480.

It is an arithmetic number, because the mean of its divisors is an integer number (17061104620).

Almost surely, 2^64832197537 is an apocalyptic number.

It is an amenable number.

64832197537 is a deficient number, since it is larger than the sum of its proper divisors (3412220943).

64832197537 is a wasteful number, since it uses less digits than its factorization.

64832197537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412220942.

The product of its digits is 7620480, while the sum is 55.

The spelling of 64832197537 in words is "sixty-four billion, eight hundred thirty-two million, one hundred ninety-seven thousand, five hundred thirty-seven".