121513374739 has 2 divisors, whose sum is σ = 121513374740. Its totient is φ = 121513374738.

The previous prime is 121513374733. The next prime is 121513374769. The reversal of 121513374739 is 937473315121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121513374739 - 2³¹ = 119365891091 is a prime.

It is not a weakly prime, because it can be changed into another prime (121513374733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60756687369 + 60756687370.

It is an arithmetic number, because the mean of its divisors is an integer number (60756687370).

Almost surely, 2^121513374739 is an apocalyptic number.

121513374739 is a deficient number, since it is larger than the sum of its proper divisors (1).

121513374739 is an equidigital number, since it uses as much as digits as its factorization.

121513374739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The spelling of 121513374739 in words is "one hundred twenty-one billion, five hundred thirteen million, three hundred seventy-four thousand, seven hundred thirty-nine".