78328885145 has 16 divisors (see below), whose sum is σ = 107428200960. Its totient is φ = 53708370624.

The previous prime is 78328885121. The next prime is 78328885163. The reversal of 78328885145 is 54158882387.

It is a cyclic number.

It is not a de Polignac number, because 78328885145 - 2¹⁰ = 78328884121 is a prime.

It is a super-2 number, since 2×78328885145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767216 + ... + 863294.

It is an arithmetic number, because the mean of its divisors is an integer number (6714262560).

Almost surely, 2^78328885145 is an apocalyptic number.

It is an amenable number.

78328885145 is a deficient number, since it is larger than the sum of its proper divisors (29099315815).

78328885145 is a wasteful number, since it uses less digits than its factorization.

78328885145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119384.

The product of its digits is 17203200, while the sum is 59.

The spelling of 78328885145 in words is "seventy-eight billion, three hundred twenty-eight million, eight hundred eighty-five thousand, one hundred forty-five".