4497918738121 has 2 divisors, whose sum is σ = 4497918738122. Its totient is φ = 4497918738120.

The previous prime is 4497918738029. The next prime is 4497918738127. The reversal of 4497918738121 is 1218378197944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4207273754896 + 290644983225 = 2051164^2 + 539115^2 .

It is a cyclic number.

It is not a de Polignac number, because 4497918738121 - 2¹³ = 4497918729929 is a prime.

It is a super-3 number, since 3×4497918738121³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (4497918738127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2248959369060 + 2248959369061.

It is an arithmetic number, because the mean of its divisors is an integer number (2248959369061).

Almost surely, 2^{4497918738121} is an apocalyptic number.

It is an amenable number.

4497918738121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4497918738121 is an equidigital number, since it uses as much as digits as its factorization.

4497918738121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 64.

The spelling of 4497918738121 in words is "four trillion, four hundred ninety-seven billion, nine hundred eighteen million, seven hundred thirty-eight thousand, one hundred twenty-one".