78625810783 has 4 divisors (see below), whose sum is σ = 84673950088. Its totient is φ = 72577671480.

The previous prime is 78625810771. The next prime is 78625810789. The reversal of 78625810783 is 38701852687.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78625810783 - 2⁵ = 78625810751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78625810789) 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, 3024069633 + ... + 3024069658.

It is an arithmetic number, because the mean of its divisors is an integer number (21168487522).

Almost surely, 2^78625810783 is an apocalyptic number.

78625810783 is a deficient number, since it is larger than the sum of its proper divisors (6048139305).

78625810783 is a wasteful number, since it uses less digits than its factorization.

78625810783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6048139304.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 78625810783 in words is "seventy-eight billion, six hundred twenty-five million, eight hundred ten thousand, seven hundred eighty-three".