220851538166308 has 18 divisors (see below), whose sum is σ = 449590631267526. Its totient is φ = 94650659214048.

The previous prime is 220851538166261. The next prime is 220851538166309. The reversal of 220851538166308 is 803661835158022.

It can be written as a sum of positive squares in only one way, i.e., 216519512018404 + 4332026147904 = 14714602^2 + 2081352^2 .

It is not an unprimeable number, because it can be changed into a prime (220851538166309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 563396780841 + ... + 563396781232.

Almost surely, 2^{220851538166308} is an apocalyptic number.

220851538166308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220851538166308 is an abundant number, since it is smaller than the sum of its proper divisors (228739093101218).

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

220851538166308 is a wasteful number, since it uses less digits than its factorization.

220851538166308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126793562091 (or 1126793562082 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 58.

The spelling of 220851538166308 in words is "two hundred twenty trillion, eight hundred fifty-one billion, five hundred thirty-eight million, one hundred sixty-six thousand, three hundred eight".