840025744197121 has 8 divisors (see below), whose sum is σ = 841122054622080. Its totient is φ = 838929444031488.

The previous prime is 840025744197091. The next prime is 840025744197139. The reversal of 840025744197121 is 121791447520048.

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 840025744197121 - 2³⁹ = 839475988383233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840025744197181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168762420 + ... + 173668666.

It is an arithmetic number, because the mean of its divisors is an integer number (105140256827760).

Almost surely, 2^{840025744197121} is an apocalyptic number.

It is an amenable number.

840025744197121 is a deficient number, since it is larger than the sum of its proper divisors (1096310424959).

840025744197121 is a wasteful number, since it uses less digits than its factorization.

840025744197121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129663.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 840025744197121 in words is "eight hundred forty trillion, twenty-five billion, seven hundred forty-four million, one hundred ninety-seven thousand, one hundred twenty-one".