65078086994 has 8 divisors (see below), whose sum is σ = 98043406860. Its totient is φ = 32396951376.

The previous prime is 65078086991. The next prime is 65078087023. The reversal of 65078086994 is 49968087056.

It can be written as a sum of positive squares in 2 ways, for example, as 51345294025 + 13732792969 = 226595^2 + 117187^2 .

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

It is not an unprimeable number, because it can be changed into a prime (65078086991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71045489 + ... + 71046404.

Almost surely, 2^65078086994 is an apocalyptic number.

65078086994 is a deficient number, since it is larger than the sum of its proper divisors (32965319866).

65078086994 is a wasteful number, since it uses less digits than its factorization.

65078086994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142092124.

The product of its (nonzero) digits is 26127360, while the sum is 62.

Adding to 65078086994 its sum of digits (62), we get a palindrome (65078087056).

The spelling of 65078086994 in words is "sixty-five billion, seventy-eight million, eighty-six thousand, nine hundred ninety-four".