121466361565 has 16 divisors (see below), whose sum is σ = 152298039168. Its totient is φ = 92825320896.

The previous prime is 121466361539. The next prime is 121466361593. The reversal of 121466361565 is 565163664121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121466361565 - 2⁹ = 121466361053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610587 + ... + 784696.

It is an arithmetic number, because the mean of its divisors is an integer number (9518627448).

Almost surely, 2^121466361565 is an apocalyptic number.

It is an amenable number.

121466361565 is a deficient number, since it is larger than the sum of its proper divisors (30831677603).

121466361565 is a wasteful number, since it uses less digits than its factorization.

121466361565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396068.

The product of its digits is 777600, while the sum is 46.

The spelling of 121466361565 in words is "one hundred twenty-one billion, four hundred sixty-six million, three hundred sixty-one thousand, five hundred sixty-five".