158957879987 has 2 divisors, whose sum is σ = 158957879988. Its totient is φ = 158957879986.

The previous prime is 158957879981. The next prime is 158957880041. The reversal of 158957879987 is 789978759851.

It is a weak prime.

It is an emirp because it is prime and its reverse (789978759851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158957879987 - 2¹² = 158957875891 is a prime.

It is a super-2 number, since 2×158957879987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158957879981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79478939993 + 79478939994.

It is an arithmetic number, because the mean of its divisors is an integer number (79478939994).

Almost surely, 2^158957879987 is an apocalyptic number.

158957879987 is a deficient number, since it is larger than the sum of its proper divisors (1).

158957879987 is an equidigital number, since it uses as much as digits as its factorization.

158957879987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200601600, while the sum is 83.

The spelling of 158957879987 in words is "one hundred fifty-eight billion, nine hundred fifty-seven million, eight hundred seventy-nine thousand, nine hundred eighty-seven".