158462637881 has 2 divisors, whose sum is σ = 158462637882. Its totient is φ = 158462637880.

The previous prime is 158462637871. The next prime is 158462637887. The reversal of 158462637881 is 188736264851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157002175225 + 1460462656 = 396235^2 + 38216^2 .

It is an emirp because it is prime and its reverse (188736264851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158462637881 is a prime.

It is a super-2 number, since 2×158462637881² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158462637881.

It is not a weakly prime, because it can be changed into another prime (158462637887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79231318940 + 79231318941.

It is an arithmetic number, because the mean of its divisors is an integer number (79231318941).

Almost surely, 2^158462637881 is an apocalyptic number.

It is an amenable number.

158462637881 is a deficient number, since it is larger than the sum of its proper divisors (1).

158462637881 is an equidigital number, since it uses as much as digits as its factorization.

158462637881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 59.

The spelling of 158462637881 in words is "one hundred fifty-eight billion, four hundred sixty-two million, six hundred thirty-seven thousand, eight hundred eighty-one".