158208617272 has 8 divisors (see below), whose sum is σ = 296641157400. Its totient is φ = 79104308632.

The previous prime is 158208617263. The next prime is 158208617317. The reversal of 158208617272 is 272716802851.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9888038572 + ... + 9888038587.

It is an arithmetic number, because the mean of its divisors is an integer number (37080144675).

Almost surely, 2^158208617272 is an apocalyptic number.

It is an amenable number.

158208617272 is a deficient number, since it is larger than the sum of its proper divisors (138432540128).

158208617272 is a wasteful number, since it uses less digits than its factorization.

158208617272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19776077165 (or 19776077161 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 158208617272 in words is "one hundred fifty-eight billion, two hundred eight million, six hundred seventeen thousand, two hundred seventy-two".