121577527709 has 8 divisors (see below), whose sum is σ = 140431796928. Its totient is φ = 104023552960.

The previous prime is 121577527681. The next prime is 121577527711. The reversal of 121577527709 is 907725775121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121577527709 - 2⁸ = 121577527453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121577527759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325073417 + ... + 325073790.

It is an arithmetic number, because the mean of its divisors is an integer number (17553974616).

Almost surely, 2^121577527709 is an apocalyptic number.

It is an amenable number.

121577527709 is a deficient number, since it is larger than the sum of its proper divisors (18854269219).

121577527709 is a wasteful number, since it uses less digits than its factorization.

121577527709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650147235.

The product of its (nonzero) digits is 2160900, while the sum is 53.

The spelling of 121577527709 in words is "one hundred twenty-one billion, five hundred seventy-seven million, five hundred twenty-seven thousand, seven hundred nine".