78562770842820 has 192 divisors, whose sum is σ = 251665524633600. Its totient is φ = 18125908416000.

The previous prime is 78562770842789. The next prime is 78562770842851. The reversal of 78562770842820 is 2824807726587.

78562770842820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (78562770842789) and next prime (78562770842851).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9982731 + ... + 16024370.

It is an arithmetic number, because the mean of its divisors is an integer number (1310757940800).

Almost surely, 2^{78562770842820} is an apocalyptic number.

It is an amenable number.

78562770842820 is an abundant number, since it is smaller than the sum of its proper divisors (173102753790780).

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

78562770842820 is a wasteful number, since it uses less digits than its factorization.

78562770842820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26007346 (or 26007344 counting only the distinct ones).

The product of its (nonzero) digits is 168591360, while the sum is 66.

The spelling of 78562770842820 in words is "seventy-eight trillion, five hundred sixty-two billion, seven hundred seventy million, eight hundred forty-two thousand, eight hundred twenty".