102227045778 has 486 divisors, whose sum is σ = 289370971071. Its totient is φ = 26044761600.

The previous prime is 102227045777. The next prime is 102227045783. The reversal of 102227045778 is 877540722201.

102227045778 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 2 + 70 + 4 + 577 + 8 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 41443594929 + 60783450849 = 203577^2 + 246543^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=226083.

It is not an unprimeable number, because it can be changed into a prime (102227045777) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 3297646623 + ... + 3297646653.

Almost surely, 2^102227045778 is an apocalyptic number.

102227045778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102227045778

102227045778 is an abundant number, since it is smaller than the sum of its proper divisors (187143925293).

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

102227045778 is a wasteful number, since it uses less digits than its factorization.

102227045778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

Adding to 102227045778 its reverse (877540722201), we get a palindrome (979767767979).

The spelling of 102227045778 in words is "one hundred two billion, two hundred twenty-seven million, forty-five thousand, seven hundred seventy-eight".