461968721878 has 4 divisors (see below), whose sum is σ = 692953082820. Its totient is φ = 230984360938.

The previous prime is 461968721843. The next prime is 461968721881. The reversal of 461968721878 is 878127869164.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115492180468 + ... + 115492180471.

It is an arithmetic number, because the mean of its divisors is an integer number (173238270705).

Almost surely, 2^461968721878 is an apocalyptic number.

461968721878 is a deficient number, since it is larger than the sum of its proper divisors (230984360942).

461968721878 is a wasteful number, since it uses less digits than its factorization.

461968721878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230984360941.

The product of its digits is 65028096, while the sum is 67.

The spelling of 461968721878 in words is "four hundred sixty-one billion, nine hundred sixty-eight million, seven hundred twenty-one thousand, eight hundred seventy-eight".