2116013421541 has 4 divisors (see below), whose sum is σ = 2116026339084. Its totient is φ = 2116000504000.

The previous prime is 2116013421523. The next prime is 2116013421553. The reversal of 2116013421541 is 1451243106112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1185278577025 + 930734844516 = 1088705^2 + 964746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116013421541 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 (2116073421541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6209860 + ... + 6541741.

It is an arithmetic number, because the mean of its divisors is an integer number (529006584771).

Almost surely, 2^{2116013421541} is an apocalyptic number.

It is an amenable number.

2116013421541 is a deficient number, since it is larger than the sum of its proper divisors (12917543).

2116013421541 is a wasteful number, since it uses less digits than its factorization.

2116013421541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917542.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 2116013421541 its reverse (1451243106112), we get a palindrome (3567256527653).

The spelling of 2116013421541 in words is "two trillion, one hundred sixteen billion, thirteen million, four hundred twenty-one thousand, five hundred forty-one".