74631360121 has 2 divisors, whose sum is σ = 74631360122. Its totient is φ = 74631360120.

The previous prime is 74631360091. The next prime is 74631360143. The reversal of 74631360121 is 12106313647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43445566096 + 31185794025 = 208436^2 + 176595^2 .

It is a cyclic number.

It is not a de Polignac number, because 74631360121 - 2¹¹ = 74631358073 is a prime.

It is not a weakly prime, because it can be changed into another prime (74631361121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37315680060 + 37315680061.

It is an arithmetic number, because the mean of its divisors is an integer number (37315680061).

Almost surely, 2^74631360121 is an apocalyptic number.

It is an amenable number.

74631360121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74631360121 is an equidigital number, since it uses as much as digits as its factorization.

74631360121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

Adding to 74631360121 its reverse (12106313647), we get a palindrome (86737673768).

The spelling of 74631360121 in words is "seventy-four billion, six hundred thirty-one million, three hundred sixty thousand, one hundred twenty-one".