135401404031444 has 24 divisors (see below), whose sum is σ = 237024828717600. Its totient is φ = 67680027009504.

The previous prime is 135401404031371. The next prime is 135401404031483. The reversal of 135401404031444 is 444130404104531.

It is a junction number, because it is equal to n+sod(n) for n = 135401404031398 and 135401404031407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212321807 + ... + 212958569.

It is an arithmetic number, because the mean of its divisors is an integer number (9876034529900).

Almost surely, 2^{135401404031444} is an apocalyptic number.

It is an amenable number.

135401404031444 is a deficient number, since it is larger than the sum of its proper divisors (101623424686156).

135401404031444 is a wasteful number, since it uses less digits than its factorization.

135401404031444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652919 (or 652917 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 135401404031444 its reverse (444130404104531), we get a palindrome (579531808135975).

The spelling of 135401404031444 in words is "one hundred thirty-five trillion, four hundred one billion, four hundred four million, thirty-one thousand, four hundred forty-four".