881159567401 has 9 divisors (see below), whose sum is σ = 912620326501. Its totient is φ = 850748471104.

The previous prime is 881159567389. The next prime is 881159567411. The reversal of 881159567401 is 104765951188.

The square root of 881159567401 is 938701.

It is a perfect power (a square), and thus also a powerful number.

881159567401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 239462443801 + 641697123600 = 489349^2 + 801060^2 .

It is a de Polignac number, because none of the positive numbers 2^k-881159567401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881159567411) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27206145 + ... + 27238513.

Almost surely, 2^881159567401 is an apocalyptic number.

881159567401 is the 938701-st square number.

881159567401 is the 469351-st centered octagonal number.

It is an amenable number.

881159567401 is a deficient number, since it is larger than the sum of its proper divisors (31460759100).

881159567401 is an frugal number, since it uses more digits than its factorization.

881159567401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64796 (or 32398 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 881159567401 in words is "eight hundred eighty-one billion, one hundred fifty-nine million, five hundred sixty-seven thousand, four hundred one".