78934000687 has 8 divisors (see below), whose sum is σ = 84358274256. Its totient is φ = 73596515712.

The previous prime is 78934000669. The next prime is 78934000711. The reversal of 78934000687 is 78600043987.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78934000687 - 2⁷ = 78934000559 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 (78934000637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21695268 + ... + 21698905.

It is an arithmetic number, because the mean of its divisors is an integer number (10544784282).

Almost surely, 2^78934000687 is an apocalyptic number.

78934000687 is a deficient number, since it is larger than the sum of its proper divisors (5424273569).

78934000687 is a wasteful number, since it uses less digits than its factorization.

78934000687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43394297.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 78934000687 in words is "seventy-eight billion, nine hundred thirty-four million, six hundred eighty-seven", and thus it is an aban number.