65006500078 has 8 divisors (see below), whose sum is σ = 105010500168. Its totient is φ = 30003000024.

The previous prime is 65006500043. The next prime is 65006500103. The reversal of 65006500078 is 87000560056.

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

It is a congruent number.

It is an unprimeable number.

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, 1250124976 + ... + 1250125027.

It is an arithmetic number, because the mean of its divisors is an integer number (13126312521).

Almost surely, 2^65006500078 is an apocalyptic number.

65006500078 is a deficient number, since it is larger than the sum of its proper divisors (40004000090).

65006500078 is a wasteful number, since it uses less digits than its factorization.

65006500078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500250018.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 65006500078 in words is "sixty-five billion, six million, five hundred thousand, seventy-eight".