21116541463523 has 8 divisors (see below), whose sum is σ = 23174168532480. Its totient is φ = 19081904641480.

The previous prime is 21116541463519. The next prime is 21116541463529. The reversal of 21116541463523 is 32536414561112.

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 21116541463523 - 2² = 21116541463519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21116541463529) 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, 5747559803 + ... + 5747563476.

It is an arithmetic number, because the mean of its divisors is an integer number (2896771066560).

Almost surely, 2^{21116541463523} is an apocalyptic number.

21116541463523 is a deficient number, since it is larger than the sum of its proper divisors (2057627068957).

21116541463523 is a wasteful number, since it uses less digits than its factorization.

21116541463523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495123457.

The product of its digits is 518400, while the sum is 44.

The spelling of 21116541463523 in words is "twenty-one trillion, one hundred sixteen billion, five hundred forty-one million, four hundred sixty-three thousand, five hundred twenty-three".