158112543881 has 2 divisors, whose sum is σ = 158112543882. Its totient is φ = 158112543880.

The previous prime is 158112543851. The next prime is 158112543887. The reversal of 158112543881 is 188345211851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137504505856 + 20608038025 = 370816^2 + 143555^2 .

It is a cyclic number.

It is not a de Polignac number, because 158112543881 - 2¹⁸ = 158112281737 is a prime.

It is a super-2 number, since 2×158112543881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158112543887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79056271940 + 79056271941.

It is an arithmetic number, because the mean of its divisors is an integer number (79056271941).

Almost surely, 2^158112543881 is an apocalyptic number.

It is an amenable number.

158112543881 is a deficient number, since it is larger than the sum of its proper divisors (1).

158112543881 is an equidigital number, since it uses as much as digits as its factorization.

158112543881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 307200, while the sum is 47.

The spelling of 158112543881 in words is "one hundred fifty-eight billion, one hundred twelve million, five hundred forty-three thousand, eight hundred eighty-one".