121513374745 has 32 divisors (see below), whose sum is σ = 168043449600. Its totient is φ = 82627050240.

The previous prime is 121513374739. The next prime is 121513374769. The reversal of 121513374745 is 547473315121.

It is not a de Polignac number, because 121513374745 - 2¹⁵ = 121513341977 is a prime.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 3177790 + ... + 3215800.

It is an arithmetic number, because the mean of its divisors is an integer number (5251357800).

Almost surely, 2^121513374745 is an apocalyptic number.

It is an amenable number.

121513374745 is a deficient number, since it is larger than the sum of its proper divisors (46530074855).

121513374745 is a wasteful number, since it uses less digits than its factorization.

121513374745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38785.

The product of its digits is 352800, while the sum is 43.

Adding to 121513374745 its reverse (547473315121), we get a palindrome (668986689866).

The spelling of 121513374745 in words is "one hundred twenty-one billion, five hundred thirteen million, three hundred seventy-four thousand, seven hundred forty-five".