121604666245 has 16 divisors (see below), whose sum is σ = 149813908992. Its totient is φ = 94719551680.

The previous prime is 121604666243. The next prime is 121604666279. The reversal of 121604666245 is 542666406121.

It is not a de Polignac number, because 121604666245 - 2¹ = 121604666243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121604666243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716757 + ... + 1786186.

It is an arithmetic number, because the mean of its divisors is an integer number (9363369312).

Almost surely, 2^121604666245 is an apocalyptic number.

It is an amenable number.

121604666245 is a deficient number, since it is larger than the sum of its proper divisors (28209242747).

121604666245 is a wasteful number, since it uses less digits than its factorization.

121604666245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503132.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 121604666245 in words is "one hundred twenty-one billion, six hundred four million, six hundred sixty-six thousand, two hundred forty-five".