158881820401 has 2 divisors, whose sum is σ = 158881820402. Its totient is φ = 158881820400.

The previous prime is 158881820371. The next prime is 158881820519. The reversal of 158881820401 is 104028188851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157736065600 + 1145754801 = 397160^2 + 33849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158881820401 is a prime.

It is not a weakly prime, because it can be changed into another prime (158881820101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79440910200 + 79440910201.

It is an arithmetic number, because the mean of its divisors is an integer number (79440910201).

Almost surely, 2^158881820401 is an apocalyptic number.

It is an amenable number.

158881820401 is a deficient number, since it is larger than the sum of its proper divisors (1).

158881820401 is an equidigital number, since it uses as much as digits as its factorization.

158881820401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163840, while the sum is 46.

The spelling of 158881820401 in words is "one hundred fifty-eight billion, eight hundred eighty-one million, eight hundred twenty thousand, four hundred one".