78515871033 has 8 divisors (see below), whose sum is σ = 110845935648. Its totient is φ = 49264860224.

The previous prime is 78515871017. The next prime is 78515871107. The reversal of 78515871033 is 33017851587.

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 78515871033 - 2⁴ = 78515871017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78515872033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769763391 + ... + 769763492.

It is an arithmetic number, because the mean of its divisors is an integer number (13855741956).

Almost surely, 2^78515871033 is an apocalyptic number.

It is an amenable number.

78515871033 is a deficient number, since it is larger than the sum of its proper divisors (32330064615).

78515871033 is a wasteful number, since it uses less digits than its factorization.

78515871033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539526903.

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 78515871033 in words is "seventy-eight billion, five hundred fifteen million, eight hundred seventy-one thousand, thirty-three".