78352844145 has 16 divisors (see below), whose sum is σ = 127235664960. Its totient is φ = 41164478784.

The previous prime is 78352844137. The next prime is 78352844147. The reversal of 78352844145 is 54144825387.

It is not a de Polignac number, because 78352844145 - 2³ = 78352844137 is a prime.

It is a super-2 number, since 2×78352844145² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78352844147) 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, 38980510 + ... + 38982519.

It is an arithmetic number, because the mean of its divisors is an integer number (7952229060).

Almost surely, 2^78352844145 is an apocalyptic number.

It is an amenable number.

78352844145 is a deficient number, since it is larger than the sum of its proper divisors (48882820815).

78352844145 is a wasteful number, since it uses less digits than its factorization.

78352844145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77963104.

The product of its digits is 4300800, while the sum is 51.

The spelling of 78352844145 in words is "seventy-eight billion, three hundred fifty-two million, eight hundred forty-four thousand, one hundred forty-five".