78124611228 has 24 divisors (see below), whose sum is σ = 182367709440. Its totient is φ = 26030544240.

The previous prime is 78124611199. The next prime is 78124611247. The reversal of 78124611228 is 82211642187.

It is a super-2 number, since 2×78124611228² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78124611228.

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, 1344468 + ... + 1401371.

It is an arithmetic number, because the mean of its divisors is an integer number (7598654560).

Almost surely, 2^78124611228 is an apocalyptic number.

It is an amenable number.

78124611228 is an abundant number, since it is smaller than the sum of its proper divisors (104243098212).

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

78124611228 is a wasteful number, since it uses less digits than its factorization.

78124611228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748217 (or 2748215 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The spelling of 78124611228 in words is "seventy-eight billion, one hundred twenty-four million, six hundred eleven thousand, two hundred twenty-eight".