78432508837 has 4 divisors (see below), whose sum is σ = 78491615296. Its totient is φ = 78373402380.

The previous prime is 78432508831. The next prime is 78432508841. The reversal of 78432508837 is 73880523487.

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 78432508837 - 2⁷ = 78432508709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78432508831) 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, 29551239 + ... + 29553892.

It is an arithmetic number, because the mean of its divisors is an integer number (19622903824).

Almost surely, 2^78432508837 is an apocalyptic number.

It is an amenable number.

78432508837 is a deficient number, since it is larger than the sum of its proper divisors (59106459).

78432508837 is a wasteful number, since it uses less digits than its factorization.

78432508837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59106458.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 78432508837 in words is "seventy-eight billion, four hundred thirty-two million, five hundred eight thousand, eight hundred thirty-seven".