78145806277824 has 56 divisors (see below), whose sum is σ = 206987739813888. Its totient is φ = 26020008618240.

The previous prime is 78145806277739. The next prime is 78145806277859. The reversal of 78145806277824 is 42877260854187.

It is a super-2 number, since 2×78145806277824² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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, 223211152 + ... + 223560975.

Almost surely, 2^{78145806277824} is an apocalyptic number.

It is an amenable number.

78145806277824 is an abundant number, since it is smaller than the sum of its proper divisors (128841933536064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78145806277824 is a wasteful number, since it uses less digits than its factorization.

78145806277824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446773053 (or 446773043 counting only the distinct ones).

The product of its (nonzero) digits is 337182720, while the sum is 69.

The spelling of 78145806277824 in words is "seventy-eight trillion, one hundred forty-five billion, eight hundred six million, two hundred seventy-seven thousand, eight hundred twenty-four".