78452436753 has 48 divisors (see below), whose sum is σ = 119582521344. Its totient is φ = 49465484640.

The previous prime is 78452436749. The next prime is 78452436763. The reversal of 78452436753 is 35763425487.

It is a happy number.

78452436753 is a `hidden beast` number, since 7 + 8 + 4 + 524 + 3 + 67 + 53 = 666.

It is not a de Polignac number, because 78452436753 - 2² = 78452436749 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78452436753.

It is not an unprimeable number, because it can be changed into a prime (78452436763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7669000 + ... + 7679222.

It is an arithmetic number, because the mean of its divisors is an integer number (2491302528).

Almost surely, 2^78452436753 is an apocalyptic number.

It is an amenable number.

78452436753 is a deficient number, since it is larger than the sum of its proper divisors (41130084591).

78452436753 is a wasteful number, since it uses less digits than its factorization.

78452436753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10666 (or 10663 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 54.

The spelling of 78452436753 in words is "seventy-eight billion, four hundred fifty-two million, four hundred thirty-six thousand, seven hundred fifty-three".