1146878404221 has 8 divisors (see below), whose sum is σ = 1668186769824. Its totient is φ = 695077820720.

The previous prime is 1146878404193. The next prime is 1146878404223. The reversal of 1146878404221 is 1224048786411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1146878404221 - 2⁶ = 1146878404157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146878404223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17376945486 + ... + 17376945551.

It is an arithmetic number, because the mean of its divisors is an integer number (208523346228).

Almost surely, 2^{1146878404221} is an apocalyptic number.

1146878404221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1146878404221 is a deficient number, since it is larger than the sum of its proper divisors (521308365603).

1146878404221 is a wasteful number, since it uses less digits than its factorization.

1146878404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34753891051.

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 1146878404221 in words is "one trillion, one hundred forty-six billion, eight hundred seventy-eight million, four hundred four thousand, two hundred twenty-one".