72166722201110 has 16 divisors (see below), whose sum is σ = 129900400551936. Its totient is φ = 28866622082688.

The previous prime is 72166722201109. The next prime is 72166722201193. The reversal of 72166722201110 is 1110222766127.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688214 + ... + 12567273.

It is an arithmetic number, because the mean of its divisors is an integer number (8118775034496).

Almost surely, 2^{72166722201110} is an apocalyptic number.

72166722201110 is a deficient number, since it is larger than the sum of its proper divisors (57733678350826).

72166722201110 is a wasteful number, since it uses less digits than its factorization.

72166722201110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16699447.

The product of its (nonzero) digits is 28224, while the sum is 38.

Adding to 72166722201110 its reverse (1110222766127), we get a palindrome (73276944967237).

The spelling of 72166722201110 in words is "seventy-two trillion, one hundred sixty-six billion, seven hundred twenty-two million, two hundred one thousand, one hundred ten".