220851538166471 has 16 divisors (see below), whose sum is σ = 224850103068864. Its totient is φ = 216881054337024.

The previous prime is 220851538166443. The next prime is 220851538166477. The reversal of 220851538166471 is 174661835158022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220851538166471 is a prime.

It is a super-3 number, since 3×220851538166471³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220851538166471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220851538166477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11710691 + ... + 24059163.

It is an arithmetic number, because the mean of its divisors is an integer number (14053131441804).

Almost surely, 2^{220851538166471} is an apocalyptic number.

220851538166471 is a deficient number, since it is larger than the sum of its proper divisors (3998564902393).

220851538166471 is a wasteful number, since it uses less digits than its factorization.

220851538166471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12349610.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 220851538166471 in words is "two hundred twenty trillion, eight hundred fifty-one billion, five hundred thirty-eight million, one hundred sixty-six thousand, four hundred seventy-one".