133411015981 has 8 divisors (see below), whose sum is σ = 136531353024. Its totient is φ = 130291486080.

The previous prime is 133411015973. The next prime is 133411016047. The reversal of 133411015981 is 189510114331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133411015981 - 2³ = 133411015973 is a prime.

It is a super-2 number, since 2×133411015981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133411015981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133411015901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139320 + ... + 535006.

It is an arithmetic number, because the mean of its divisors is an integer number (17066419128).

Almost surely, 2^133411015981 is an apocalyptic number.

It is an amenable number.

133411015981 is a deficient number, since it is larger than the sum of its proper divisors (3120337043).

133411015981 is an equidigital number, since it uses as much as digits as its factorization.

133411015981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403571.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 133411015981 in words is "one hundred thirty-three billion, four hundred eleven million, fifteen thousand, nine hundred eighty-one".