78558035828 has 24 divisors (see below), whose sum is σ = 142450936320. Its totient is φ = 37867404960.

The previous prime is 78558035807. The next prime is 78558035849. The reversal of 78558035828 is 82853085587.

It is an interprime number because it is at equal distance from previous prime (78558035807) and next prime (78558035849).

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, 1171823 + ... + 1237046.

It is an arithmetic number, because the mean of its divisors is an integer number (5935455680).

Almost surely, 2^78558035828 is an apocalyptic number.

It is an amenable number.

78558035828 is a deficient number, since it is larger than the sum of its proper divisors (63892900492).

78558035828 is a wasteful number, since it uses less digits than its factorization.

78558035828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409167 (or 2409165 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 59.

The spelling of 78558035828 in words is "seventy-eight billion, five hundred fifty-eight million, thirty-five thousand, eight hundred twenty-eight".