78629102280 has 48 divisors (see below), whose sum is σ = 255544583580. Its totient is φ = 20967760512.

The previous prime is 78629102269. The next prime is 78629102311. The reversal of 78629102280 is 8220192687.

78629102280 is a `hidden beast` number, since 7 + 8 + 629 + 10 + 2 + 2 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77196176964 + 1432925316 = 277842^2 + 37854^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 109206727 + ... + 109207446.

Almost surely, 2^78629102280 is an apocalyptic number.

It is an amenable number.

78629102280 is an abundant number, since it is smaller than the sum of its proper divisors (176915481300).

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

78629102280 is a wasteful number, since it uses less digits than its factorization.

78629102280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218414190 (or 218414183 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 78629102280 in words is "seventy-eight billion, six hundred twenty-nine million, one hundred two thousand, two hundred eighty".