216158623815701 has 4 divisors (see below), whose sum is σ = 247038427217952. Its totient is φ = 185278820413452.

The previous prime is 216158623815661. The next prime is 216158623815703. The reversal of 216158623815701 is 107518326851612.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216158623815701 - 2⁶ = 216158623815637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216158623815703) 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 3 ways as a sum of consecutive naturals, for example, 15439901701115 + ... + 15439901701128.

It is an arithmetic number, because the mean of its divisors is an integer number (61759606804488).

Almost surely, 2^{216158623815701} is an apocalyptic number.

It is an amenable number.

216158623815701 is a deficient number, since it is larger than the sum of its proper divisors (30879803402251).

216158623815701 is an equidigital number, since it uses as much as digits as its factorization.

216158623815701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30879803402250.

The product of its (nonzero) digits is 4838400, while the sum is 56.

The spelling of 216158623815701 in words is "two hundred sixteen trillion, one hundred fifty-eight billion, six hundred twenty-three million, eight hundred fifteen thousand, seven hundred one".