78789077859 has 8 divisors (see below), whose sum is σ = 105062768640. Its totient is φ = 52520719496.

The previous prime is 78789077831. The next prime is 78789077903. The reversal of 78789077859 is 95877098787.

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 78789077859 - 2⁵ = 78789077827 is a prime.

It is a super-3 number, since 3×78789077859³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (78789077819) 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, 1298499 + ... + 1357820.

It is an arithmetic number, because the mean of its divisors is an integer number (13132846080).

Almost surely, 2^78789077859 is an apocalyptic number.

78789077859 is a deficient number, since it is larger than the sum of its proper divisors (26273690781).

78789077859 is a wasteful number, since it uses less digits than its factorization.

78789077859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666209.

The product of its (nonzero) digits is 497871360, while the sum is 75.

The spelling of 78789077859 in words is "seventy-eight billion, seven hundred eighty-nine million, seventy-seven thousand, eight hundred fifty-nine".