4665552480121 has 15 divisors (see below), whose sum is σ = 5054730395163. Its totient is φ = 4306326869520.

The previous prime is 4665552480101. The next prime is 4665552480137. The reversal of 4665552480121 is 1210842555664.

The square root of 4665552480121 is 2159989.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 4374535388521 + 291017091600 = 2091539^2 + 539460^2 .

It is not a de Polignac number, because 4665552480121 - 2¹³ = 4665552471929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4665552480101) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 365031751 + ... + 365044531.

Almost surely, 2^{4665552480121} is an apocalyptic number.

4665552480121 is the 2159989-th square number.

4665552480121 is the 1079995-th centered octagonal number.

It is an amenable number.

4665552480121 is a deficient number, since it is larger than the sum of its proper divisors (389177915042).

4665552480121 is an frugal number, since it uses more digits than its factorization.

4665552480121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25614 (or 12794 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 49.

Multiplying 4665552480121 by its sum of digits (49), we get a square (228612071525929 = 15119923²).

The spelling of 4665552480121 in words is "four trillion, six hundred sixty-five billion, five hundred fifty-two million, four hundred eighty thousand, one hundred twenty-one".