78358242705 has 16 divisors (see below), whose sum is σ = 127090631040. Its totient is φ = 41218581888.

The previous prime is 78358242673. The next prime is 78358242707. The reversal of 78358242705 is 50724285387.

It is not a de Polignac number, because 78358242705 - 2⁵ = 78358242673 is a prime.

It is a super-2 number, since 2×78358242705² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78358242707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35778925 + ... + 35781114.

It is an arithmetic number, because the mean of its divisors is an integer number (7943164440).

Almost surely, 2^78358242705 is an apocalyptic number.

It is an amenable number.

78358242705 is a deficient number, since it is larger than the sum of its proper divisors (48732388335).

78358242705 is a wasteful number, since it uses less digits than its factorization.

78358242705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71560120.

The product of its (nonzero) digits is 3763200, while the sum is 51.

The spelling of 78358242705 in words is "seventy-eight billion, three hundred fifty-eight million, two hundred forty-two thousand, seven hundred five".