78442282098 has 24 divisors (see below), whose sum is σ = 170494436268. Its totient is φ = 26064941472.

The previous prime is 78442282027. The next prime is 78442282099. The reversal of 78442282098 is 89028224487.

78442282098 is a `hidden beast` number, since 7 + 8 + 4 + 422 + 8 + 209 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 78295314969 + 146967129 = 279813^2 + 12123^2 .

It is a super-2 number, since 2×78442282098² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78442282099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6867961 + ... + 6879372.

Almost surely, 2^78442282098 is an apocalyptic number.

78442282098 is an abundant number, since it is smaller than the sum of its proper divisors (92052154170).

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

78442282098 is a wasteful number, since it uses less digits than its factorization.

78442282098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13747658 (or 13747655 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 78442282098 in words is "seventy-eight billion, four hundred forty-two million, two hundred eighty-two thousand, ninety-eight".