78898204729 has 16 divisors (see below), whose sum is σ = 84870201600. Its totient is φ = 73110121344.

The previous prime is 78898204711. The next prime is 78898204733. The reversal of 78898204729 is 92740289887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78898204729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78898204799) 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 15 ways as a sum of consecutive naturals, for example, 1463949 + ... + 1516885.

It is an arithmetic number, because the mean of its divisors is an integer number (5304387600).

Almost surely, 2^78898204729 is an apocalyptic number.

It is an amenable number.

78898204729 is a deficient number, since it is larger than the sum of its proper divisors (5971996871).

78898204729 is a wasteful number, since it uses less digits than its factorization.

78898204729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54672.

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 78898204729 in words is "seventy-eight billion, eight hundred ninety-eight million, two hundred four thousand, seven hundred twenty-nine".