78281176228 has 6 divisors (see below), whose sum is σ = 136992058406. Its totient is φ = 39140588112.

The previous prime is 78281176217. The next prime is 78281176247. The reversal of 78281176228 is 82267118287.

It can be written as a sum of positive squares in only one way, i.e., 58123423744 + 20157752484 = 241088^2 + 141978^2 .

It is a super-2 number, since 2×78281176228² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9785147025 + ... + 9785147032.

Almost surely, 2^78281176228 is an apocalyptic number.

It is an amenable number.

78281176228 is a deficient number, since it is larger than the sum of its proper divisors (58710882178).

78281176228 is a wasteful number, since it uses less digits than its factorization.

78281176228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19570294061 (or 19570294059 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 52.

The spelling of 78281176228 in words is "seventy-eight billion, two hundred eighty-one million, one hundred seventy-six thousand, two hundred twenty-eight".