78247422023848 has 144 divisors (see below), whose sum is σ = 187673078144160. Its totient is φ = 30472975874880.

The previous prime is 78247422023767. The next prime is 78247422023891. The reversal of 78247422023848 is 84832022474287.

It is a super-2 number, since 2×78247422023848² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 110971461 + ... + 111674347.

It is an arithmetic number, because the mean of its divisors is an integer number (1303285264890).

Almost surely, 2^{78247422023848} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78247422023848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93836539072080).

78247422023848 is an abundant number, since it is smaller than the sum of its proper divisors (109425656120312).

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

78247422023848 is a wasteful number, since it uses less digits than its factorization.

78247422023848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705276 (or 705254 counting only the distinct ones).

The product of its (nonzero) digits is 77070336, while the sum is 61.

The spelling of 78247422023848 in words is "seventy-eight trillion, two hundred forty-seven billion, four hundred twenty-two million, twenty-three thousand, eight hundred forty-eight".