78406514424 has 96 divisors (see below), whose sum is σ = 253238469120. Its totient is φ = 21427864128.

The previous prime is 78406514363. The next prime is 78406514437. The reversal of 78406514424 is 42441560487.

78406514424 is a `hidden beast` number, since 78 + 40 + 6 + 514 + 4 + 24 = 666.

It is a super-2 number, since 2×78406514424² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78406514424.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3370332 + ... + 3393515.

It is an arithmetic number, because the mean of its divisors is an integer number (2637900720).

Almost surely, 2^78406514424 is an apocalyptic number.

It is an amenable number.

78406514424 is an abundant number, since it is smaller than the sum of its proper divisors (174831954696).

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

78406514424 is a wasteful number, since it uses less digits than its factorization.

78406514424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6763889 (or 6763882 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 78406514424 in words is "seventy-eight billion, four hundred six million, five hundred fourteen thousand, four hundred twenty-four".