78535478753788 has 24 divisors (see below), whose sum is σ = 157076904815712. Its totient is φ = 33656787899904.

The previous prime is 78535478753747. The next prime is 78535478753807. The reversal of 78535478753788 is 88735787453587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52348081 + ... + 53827432.

It is an arithmetic number, because the mean of its divisors is an integer number (6544871033988).

Almost surely, 2^{78535478753788} is an apocalyptic number.

It is an amenable number.

78535478753788 is an abundant number, since it is smaller than the sum of its proper divisors (78541426061924).

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

78535478753788 is a wasteful number, since it uses less digits than its factorization.

78535478753788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106201941 (or 106201939 counting only the distinct ones).

The product of its digits is 44255232000, while the sum is 85.

The spelling of 78535478753788 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred seventy-eight million, seven hundred fifty-three thousand, seven hundred eighty-eight".