78228957120 has 448 divisors, whose sum is σ = 269404185600. Its totient is φ = 19160432640.

The previous prime is 78228957119. The next prime is 78228957133. The reversal of 78228957120 is 2175982287.

It is a super-2 number, since 2×78228957120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 178197861 + ... + 178198299.

Almost surely, 2^78228957120 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 78228957120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134702092800).

78228957120 is an abundant number, since it is smaller than the sum of its proper divisors (191175228480).

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

78228957120 is a wasteful number, since it uses less digits than its factorization.

78228957120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 78228957120 in words is "seventy-eight billion, two hundred twenty-eight million, nine hundred fifty-seven thousand, one hundred twenty".