2116400512054 has 4 divisors (see below), whose sum is σ = 3174600768084. Its totient is φ = 1058200256026.

The previous prime is 2116400512033. The next prime is 2116400512067. The reversal of 2116400512054 is 4502150046112.

It is a happy number.

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

It is a super-2 number, since 2×2116400512054² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529100128012 + ... + 529100128015.

It is an arithmetic number, because the mean of its divisors is an integer number (793650192021).

Almost surely, 2^{2116400512054} is an apocalyptic number.

2116400512054 is a deficient number, since it is larger than the sum of its proper divisors (1058200256030).

2116400512054 is a wasteful number, since it uses less digits than its factorization.

2116400512054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058200256029.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 2116400512054 its reverse (4502150046112), we get a palindrome (6618550558166).

The spelling of 2116400512054 in words is "two trillion, one hundred sixteen billion, four hundred million, five hundred twelve thousand, fifty-four".