78651680277860 has 24 divisors (see below), whose sum is σ = 165171905075520. Its totient is φ = 31460028969824.

The previous prime is 78651680277823. The next prime is 78651680277931. The reversal of 78651680277860 is 6877208615687.

It is a super-5 number, since 5×78651680277860⁵ (a number of 71 digits) contains 55555 as substring.

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, 39192920 + ... + 41150799.

It is an arithmetic number, because the mean of its divisors is an integer number (6882162711480).

Almost surely, 2^{78651680277860} is an apocalyptic number.

It is an amenable number.

78651680277860 is an abundant number, since it is smaller than the sum of its proper divisors (86520224797660).

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

78651680277860 is a wasteful number, since it uses less digits than its factorization.

78651680277860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80392675 (or 80392673 counting only the distinct ones).

The product of its (nonzero) digits is 379330560, while the sum is 71.

The spelling of 78651680277860 in words is "seventy-eight trillion, six hundred fifty-one billion, six hundred eighty million, two hundred seventy-seven thousand, eight hundred sixty".