8216123541 has 8 divisors (see below), whose sum is σ = 11250908064. Its totient is φ = 5329377360.

The previous prime is 8216123527. The next prime is 8216123543. The reversal of 8216123541 is 1453216128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8216123541 - 2⁷ = 8216123413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216123543) 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, 37009455 + ... + 37009676.

It is an arithmetic number, because the mean of its divisors is an integer number (1406363508).

Almost surely, 2^8216123541 is an apocalyptic number.

It is an amenable number.

8216123541 is a deficient number, since it is larger than the sum of its proper divisors (3034784523).

8216123541 is a wasteful number, since it uses less digits than its factorization.

8216123541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74019171.

The product of its digits is 11520, while the sum is 33.

The square root of 8216123541 is about 90642.8350229625. The cubic root of 8216123541 is about 2017.8505009013.

Adding to 8216123541 its reverse (1453216128), we get a palindrome (9669339669).

The spelling of 8216123541 in words is "eight billion, two hundred sixteen million, one hundred twenty-three thousand, five hundred forty-one".