2171236795372 has 48 divisors (see below), whose sum is σ = 3855511296000. Its totient is φ = 1069719640704.

The previous prime is 2171236795363. The next prime is 2171236795373. The reversal of 2171236795372 is 2735976321712.

It is not an unprimeable number, because it can be changed into a prime (2171236795373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637285293 + ... + 637288699.

It is an arithmetic number, because the mean of its divisors is an integer number (80323152000).

Almost surely, 2^{2171236795372} is an apocalyptic number.

It is an amenable number.

2171236795372 is a deficient number, since it is larger than the sum of its proper divisors (1684274500628).

2171236795372 is a wasteful number, since it uses less digits than its factorization.

2171236795372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958 (or 6956 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 55.

The spelling of 2171236795372 in words is "two trillion, one hundred seventy-one billion, two hundred thirty-six million, seven hundred ninety-five thousand, three hundred seventy-two".