121765476423 has 4 divisors (see below), whose sum is σ = 162353968568. Its totient is φ = 81176984280.

The previous prime is 121765476419. The next prime is 121765476541. The reversal of 121765476423 is 324674567121.

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

It is not a de Polignac number, because 121765476423 - 2² = 121765476419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121765476403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20294246068 + ... + 20294246073.

It is an arithmetic number, because the mean of its divisors is an integer number (40588492142).

Almost surely, 2^121765476423 is an apocalyptic number.

121765476423 is a deficient number, since it is larger than the sum of its proper divisors (40588492145).

121765476423 is an equidigital number, since it uses as much as digits as its factorization.

121765476423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40588492144.

The product of its digits is 1693440, while the sum is 48.

The spelling of 121765476423 in words is "one hundred twenty-one billion, seven hundred sixty-five million, four hundred seventy-six thousand, four hundred twenty-three".