100133571481 has 4 divisors (see below), whose sum is σ = 100141375012. Its totient is φ = 100125767952.

The previous prime is 100133571467. The next prime is 100133571511. The reversal of 100133571481 is 184175331001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184175331001 = 23 ⋅8007623087.

It can be written as a sum of positive squares in 2 ways, for example, as 48384601225 + 51748970256 = 219965^2 + 227484^2 .

It is a cyclic number.

It is not a de Polignac number, because 100133571481 - 2⁷ = 100133571353 is a prime.

It is a super-2 number, since 2×100133571481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100133575481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3882486 + ... + 3908191.

It is an arithmetic number, because the mean of its divisors is an integer number (25035343753).

Almost surely, 2^100133571481 is an apocalyptic number.

It is an amenable number.

100133571481 is a deficient number, since it is larger than the sum of its proper divisors (7803531).

100133571481 is an equidigital number, since it uses as much as digits as its factorization.

100133571481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803530.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 100133571481 in words is "one hundred billion, one hundred thirty-three million, five hundred seventy-one thousand, four hundred eighty-one".