158190217951 has 4 divisors (see below), whose sum is σ = 160357207312. Its totient is φ = 156023228592.

The previous prime is 158190217919. The next prime is 158190217973. The reversal of 158190217951 is 159712091851.

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 158190217951 - 2⁵ = 158190217919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158190217895 and 158190217904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158190217151) 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, 1083494571 + ... + 1083494716.

It is an arithmetic number, because the mean of its divisors is an integer number (40089301828).

Almost surely, 2^158190217951 is an apocalyptic number.

158190217951 is a deficient number, since it is larger than the sum of its proper divisors (2166989361).

158190217951 is an equidigital number, since it uses as much as digits as its factorization.

158190217951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166989360.

The product of its (nonzero) digits is 226800, while the sum is 49.

The spelling of 158190217951 in words is "one hundred fifty-eight billion, one hundred ninety million, two hundred seventeen thousand, nine hundred fifty-one".