78298128412 has 36 divisors (see below), whose sum is σ = 160940161200. Its totient is φ = 33230542464.

The previous prime is 78298128361. The next prime is 78298128431. The reversal of 78298128412 is 21482189287.

It is a super-2 number, since 2×78298128412² (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 78298128412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1919037 + ... + 1959412.

Almost surely, 2^78298128412 is an apocalyptic number.

It is an amenable number.

78298128412 is an abundant number, since it is smaller than the sum of its proper divisors (82642032788).

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

78298128412 is a wasteful number, since it uses less digits than its factorization.

78298128412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878570 (or 3878561 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 52.

The spelling of 78298128412 in words is "seventy-eight billion, two hundred ninety-eight million, one hundred twenty-eight thousand, four hundred twelve".