78535688625603 has 24 divisors (see below), whose sum is σ = 123756903359856. Its totient is φ = 47595965107200.

The previous prime is 78535688625571. The next prime is 78535688625671. The reversal of 78535688625603 is 30652688653587.

It is a happy number.

78535688625603 is a `hidden beast` number, since 7 + 8 + 5 + 3 + 5 + 6 + 8 + 8 + 6 + 2 + 5 + 603 = 666.

It is not a de Polignac number, because 78535688625603 - 2⁵ = 78535688625571 is a prime.

It is a super-2 number, since 2×78535688625603² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78535688625673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8514150 + ... + 15151307.

It is an arithmetic number, because the mean of its divisors is an integer number (5156537639994).

Almost surely, 2^{78535688625603} is an apocalyptic number.

78535688625603 is a deficient number, since it is larger than the sum of its proper divisors (45221214734253).

78535688625603 is a wasteful number, since it uses less digits than its factorization.

78535688625603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23698995 (or 23698992 counting only the distinct ones).

The product of its (nonzero) digits is 1741824000, while the sum is 72.

The spelling of 78535688625603 in words is "seventy-eight trillion, five hundred thirty-five billion, six hundred eighty-eight million, six hundred twenty-five thousand, six hundred three".