20072151722166 has 8 divisors (see below), whose sum is σ = 40144303444344. Its totient is φ = 6690717240720.

The previous prime is 20072151722153. The next prime is 20072151722243. The reversal of 20072151722166 is 66122715127002.

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

20072151722166 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672679310175 + ... + 1672679310186.

It is an arithmetic number, because the mean of its divisors is an integer number (5018037930543).

Almost surely, 2^{20072151722166} is an apocalyptic number.

20072151722166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20072151722166 is a wasteful number, since it uses less digits than its factorization.

20072151722166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345358620366.

The product of its (nonzero) digits is 141120, while the sum is 42.

Adding to 20072151722166 its reverse (66122715127002), we get a palindrome (86194866849168).

The spelling of 20072151722166 in words is "twenty trillion, seventy-two billion, one hundred fifty-one million, seven hundred twenty-two thousand, one hundred sixty-six".