2116400260021 has 8 divisors (see below), whose sum is σ = 2119087961600. Its totient is φ = 2113713396720.

The previous prime is 2116400259991. The next prime is 2116400260103. The reversal of 2116400260021 is 1200620046112.

It is a happy number.

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 2116400260021 - 2²¹ = 2116398162869 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 (2116400260721) 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, 4922620 + ... + 5335258.

It is an arithmetic number, because the mean of its divisors is an integer number (264885995200).

Almost surely, 2^{2116400260021} is an apocalyptic number.

It is an amenable number.

2116400260021 is a deficient number, since it is larger than the sum of its proper divisors (2687701579).

2116400260021 is an equidigital number, since it uses as much as digits as its factorization.

2116400260021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419139.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 2116400260021 in words is "two trillion, one hundred sixteen billion, four hundred million, two hundred sixty thousand, twenty-one".