6662156361 has 8 divisors (see below), whose sum is σ = 10151857344. Its totient is φ = 3806946480.

The previous prime is 6662156353. The next prime is 6662156363. The reversal of 6662156361 is 1636512666.

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

It is not a de Polignac number, because 6662156361 - 2³ = 6662156353 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6662156363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158622750 + ... + 158622791.

It is an arithmetic number, because the mean of its divisors is an integer number (1268982168).

Almost surely, 2^6662156361 is an apocalyptic number.

It is an amenable number.

6662156361 is a deficient number, since it is larger than the sum of its proper divisors (3489700983).

6662156361 is a wasteful number, since it uses less digits than its factorization.

6662156361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317245551.

The product of its digits is 233280, while the sum is 42.

The square root of 6662156361 is about 81622.0335509965. The cubic root of 6662156361 is about 1881.6475259959.

The spelling of 6662156361 in words is "six billion, six hundred sixty-two million, one hundred fifty-six thousand, three hundred sixty-one".