78906221871412 has 48 divisors (see below), whose sum is σ = 154059078272512. Its totient is φ = 35116240832640.

The previous prime is 78906221871361. The next prime is 78906221871431. The reversal of 78906221871412 is 21417812260987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87909558 + ... + 88802605.

Almost surely, 2^{78906221871412} is an apocalyptic number.

It is an amenable number.

78906221871412 is a deficient number, since it is larger than the sum of its proper divisors (75152856401100).

78906221871412 is a wasteful number, since it uses less digits than its factorization.

78906221871412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176712488 (or 176712486 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 78906221871412 in words is "seventy-eight trillion, nine hundred six billion, two hundred twenty-one million, eight hundred seventy-one thousand, four hundred twelve".