133401404671 has 4 divisors (see below), whose sum is σ = 133999617472. Its totient is φ = 132803191872.

The previous prime is 133401404641. The next prime is 133401404683. The reversal of 133401404671 is 176404104331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133401404671 - 2⁵ = 133401404639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133401404641) 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, 299106066 + ... + 299106511.

It is an arithmetic number, because the mean of its divisors is an integer number (33499904368).

Almost surely, 2^133401404671 is an apocalyptic number.

133401404671 is a deficient number, since it is larger than the sum of its proper divisors (598212801).

133401404671 is an equidigital number, since it uses as much as digits as its factorization.

133401404671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598212800.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 133401404671 in words is "one hundred thirty-three billion, four hundred one million, four hundred four thousand, six hundred seventy-one".