135401404031407 has 16 divisors (see below), whose sum is σ = 138076741138752. Its totient is φ = 132752372659200.

The previous prime is 135401404031371. The next prime is 135401404031483. The reversal of 135401404031407 is 704130404104531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135401404031407 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 (135401404031107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207078193 + ... + 207731029.

It is an arithmetic number, because the mean of its divisors is an integer number (8629796321172).

Almost surely, 2^{135401404031407} is an apocalyptic number.

135401404031407 is a deficient number, since it is larger than the sum of its proper divisors (2675337107345).

135401404031407 is a wasteful number, since it uses less digits than its factorization.

135401404031407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672978.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 135401404031407 its reverse (704130404104531), we get a palindrome (839531808135938).

The spelling of 135401404031407 in words is "one hundred thirty-five trillion, four hundred one billion, four hundred four million, thirty-one thousand, four hundred seven".