121806040795 has 4 divisors (see below), whose sum is σ = 146167248960. Its totient is φ = 97444832632.

The previous prime is 121806040793. The next prime is 121806040799. The reversal of 121806040795 is 597040608121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 597040608121 = 332099 ⋅1797779.

It is a cyclic number.

It is not a de Polignac number, because 121806040795 - 2¹ = 121806040793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121806040793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12180604075 + ... + 12180604084.

It is an arithmetic number, because the mean of its divisors is an integer number (36541812240).

Almost surely, 2^121806040795 is an apocalyptic number.

121806040795 is a deficient number, since it is larger than the sum of its proper divisors (24361208165).

121806040795 is an equidigital number, since it uses as much as digits as its factorization.

121806040795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24361208164.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 121806040795 in words is "one hundred twenty-one billion, eight hundred six million, forty thousand, seven hundred ninety-five".