121073361779 has 4 divisors (see below), whose sum is σ = 121220833200. Its totient is φ = 120925890360.

The previous prime is 121073361737. The next prime is 121073361797. The reversal of 121073361779 is 977163370121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121073361779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121073361709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73734479 + ... + 73736120.

It is an arithmetic number, because the mean of its divisors is an integer number (30305208300).

Almost surely, 2^121073361779 is an apocalyptic number.

121073361779 is a deficient number, since it is larger than the sum of its proper divisors (147471421).

121073361779 is an equidigital number, since it uses as much as digits as its factorization.

121073361779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147471420.

The product of its (nonzero) digits is 333396, while the sum is 47.

The spelling of 121073361779 in words is "one hundred twenty-one billion, seventy-three million, three hundred sixty-one thousand, seven hundred seventy-nine".