2171066772246 has 32 divisors (see below), whose sum is σ = 4354009583616. Its totient is φ = 721711848000.

The previous prime is 2171066772241. The next prime is 2171066772257. The reversal of 2171066772246 is 6422776601712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171066772241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3566011 + ... + 4130201.

It is an arithmetic number, because the mean of its divisors is an integer number (136062799488).

Almost surely, 2^{2171066772246} is an apocalyptic number.

2171066772246 is an abundant number, since it is smaller than the sum of its proper divisors (2182942811370).

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

2171066772246 is a wasteful number, since it uses less digits than its factorization.

2171066772246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565948.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 2171066772246 in words is "two trillion, one hundred seventy-one billion, sixty-six million, seven hundred seventy-two thousand, two hundred forty-six".