158691717684752 has 20 divisors (see below), whose sum is σ = 351388803445056. Its totient is φ = 68010736150560.

The previous prime is 158691717684749. The next prime is 158691717684767. The reversal of 158691717684752 is 257486717196851.

It is a super-2 number, since 2×158691717684752² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708445168124 + ... + 708445168347.

Almost surely, 2^{158691717684752} is an apocalyptic number.

It is an amenable number.

158691717684752 is an abundant number, since it is smaller than the sum of its proper divisors (192697085760304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158691717684752 is a wasteful number, since it uses less digits than its factorization.

158691717684752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416890336486 (or 1416890336480 counting only the distinct ones).

The product of its digits is 1422489600, while the sum is 77.

The spelling of 158691717684752 in words is "one hundred fifty-eight trillion, six hundred ninety-one billion, seven hundred seventeen million, six hundred eighty-four thousand, seven hundred fifty-two".