2171137652 has 12 divisors (see below), whose sum is σ = 3902180100. Its totient is φ = 1056229056.

The previous prime is 2171137649. The next prime is 2171137667. The reversal of 2171137652 is 2567311712.

It can be written as a sum of positive squares in 2 ways, for example, as 1824656656 + 346480996 = 42716^2 + 18614^2 .

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, 7334777 + ... + 7335072.

It is an arithmetic number, because the mean of its divisors is an integer number (325181675).

Almost surely, 2^2171137652 is an apocalyptic number.

It is an amenable number.

2171137652 is a deficient number, since it is larger than the sum of its proper divisors (1731042448).

2171137652 is a wasteful number, since it uses less digits than its factorization.

2171137652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14669890 (or 14669888 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 2171137652 is about 46595.4681487374. The cubic root of 2171137652 is about 1294.8787972612.

The spelling of 2171137652 in words is "two billion, one hundred seventy-one million, one hundred thirty-seven thousand, six hundred fifty-two".