78881443212220 has 36 divisors (see below), whose sum is σ = 182079232147512. Its totient is φ = 28684161167200.

The previous prime is 78881443212101. The next prime is 78881443212251. The reversal of 78881443212220 is 2221234418887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16297816426 + ... + 16297821265.

It is an arithmetic number, because the mean of its divisors is an integer number (5057756448542).

Almost surely, 2^{78881443212220} is an apocalyptic number.

It is an amenable number.

78881443212220 is an abundant number, since it is smaller than the sum of its proper divisors (103197788935292).

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

78881443212220 is a wasteful number, since it uses less digits than its factorization.

78881443212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32595637722 (or 32595637709 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 52.

The spelling of 78881443212220 in words is "seventy-eight trillion, eight hundred eighty-one billion, four hundred forty-three million, two hundred twelve thousand, two hundred twenty".