121758048707993 has 8 divisors (see below), whose sum is σ = 128098777679880. Its totient is φ = 115577844520320.

The previous prime is 121758048707983. The next prime is 121758048708001. The reversal of 121758048707993 is 399707840857121.

It can be written as a sum of positive squares in 4 ways, for example, as 43929429573184 + 77828619134809 = 6627928^2 + 8822053^2 .

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 121758048707993 - 2³⁰ = 121756974966169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121758048707903) 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, 40131194498 + ... + 40131197531.

It is an arithmetic number, because the mean of its divisors is an integer number (16012347209985).

Almost surely, 2^{121758048707993} is an apocalyptic number.

It is an amenable number.

121758048707993 is a deficient number, since it is larger than the sum of its proper divisors (6340728971887).

121758048707993 is an equidigital number, since it uses as much as digits as its factorization.

121758048707993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80262392107.

The product of its (nonzero) digits is 213373440, while the sum is 71.

The spelling of 121758048707993 in words is "one hundred twenty-one trillion, seven hundred fifty-eight billion, forty-eight million, seven hundred seven thousand, nine hundred ninety-three".