162706561651 has 4 divisors (see below), whose sum is σ = 163436187712. Its totient is φ = 161976935592.

The previous prime is 162706561649. The next prime is 162706561681. The reversal of 162706561651 is 156165607261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 162706561651 - 2¹ = 162706561649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162706561681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364812696 + ... + 364813141.

It is an arithmetic number, because the mean of its divisors is an integer number (40859046928).

Almost surely, 2^162706561651 is an apocalyptic number.

162706561651 is a deficient number, since it is larger than the sum of its proper divisors (729626061).

162706561651 is an equidigital number, since it uses as much as digits as its factorization.

162706561651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729626060.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 162706561651 in words is "one hundred sixty-two billion, seven hundred six million, five hundred sixty-one thousand, six hundred fifty-one".