133957719641 has 8 divisors (see below), whose sum is σ = 134561090664. Its totient is φ = 133355704320.

The previous prime is 133957719611. The next prime is 133957719659. The reversal of 133957719641 is 146917759331.

It can be written as a sum of positive squares in 4 ways, for example, as 8868177241 + 125089542400 = 94171^2 + 353680^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 133957719641 - 2³⁰ = 132883977817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133957719611) 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, 140600 + ... + 536361.

It is an arithmetic number, because the mean of its divisors is an integer number (16820136333).

Almost surely, 2^133957719641 is an apocalyptic number.

It is an amenable number.

133957719641 is a deficient number, since it is larger than the sum of its proper divisors (603371023).

133957719641 is an equidigital number, since it uses as much as digits as its factorization.

133957719641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677851.

The product of its digits is 4286520, while the sum is 56.

The spelling of 133957719641 in words is "one hundred thirty-three billion, nine hundred fifty-seven million, seven hundred nineteen thousand, six hundred forty-one".