3667650142321 has 9 divisors (see below), whose sum is σ = 4031407196299. Its totient is φ = 3334208251000.

The previous prime is 3667650142313. The next prime is 3667650142337. The reversal of 3667650142321 is 1232410567663.

It is a happy number.

The square root of 3667650142321 is 1915111.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1350618189921 + 2317031952400 = 1162161^2 + 1522180^2 .

It is not a de Polignac number, because 3667650142321 - 2³ = 3667650142313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3667650142301) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20979171 + ... + 21153271.

Almost surely, 2^{3667650142321} is an apocalyptic number.

3667650142321 is the 1915111-st square number.

3667650142321 is the 957556-th centered octagonal number.

It is an amenable number.

3667650142321 is a deficient number, since it is larger than the sum of its proper divisors (363757053978).

3667650142321 is an frugal number, since it uses more digits than its factorization.

3667650142321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348224 (or 174112 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 3667650142321 in words is "three trillion, six hundred sixty-seven billion, six hundred fifty million, one hundred forty-two thousand, three hundred twenty-one".