121773872671 has 16 divisors (see below), whose sum is σ = 137152512000. Its totient is φ = 107114479200.

The previous prime is 121773872651. The next prime is 121773872681. The reversal of 121773872671 is 176278377121.

It is a cyclic number.

It is not a de Polignac number, because 121773872671 - 2⁷ = 121773872543 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 (121773872641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2264605 + ... + 2317753.

It is an arithmetic number, because the mean of its divisors is an integer number (8572032000).

Almost surely, 2^121773872671 is an apocalyptic number.

121773872671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121773872671 is a deficient number, since it is larger than the sum of its proper divisors (15378639329).

121773872671 is a wasteful number, since it uses less digits than its factorization.

121773872671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59910.

The product of its digits is 1382976, while the sum is 52.

The spelling of 121773872671 in words is "one hundred twenty-one billion, seven hundred seventy-three million, eight hundred seventy-two thousand, six hundred seventy-one".