135673520401 has 8 divisors (see below), whose sum is σ = 135875083904. Its totient is φ = 135472014000.

The previous prime is 135673520383. The next prime is 135673520447. The reversal of 135673520401 is 104025376531.

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 135673520401 - 2⁹ = 135673519889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135673520501) 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, 7769386 + ... + 7786828.

It is an arithmetic number, because the mean of its divisors is an integer number (16984385488).

Almost surely, 2^135673520401 is an apocalyptic number.

It is an amenable number.

135673520401 is a deficient number, since it is larger than the sum of its proper divisors (201563503).

135673520401 is a wasteful number, since it uses less digits than its factorization.

135673520401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28551.

The product of its (nonzero) digits is 75600, while the sum is 37.

Adding to 135673520401 its reverse (104025376531), we get a palindrome (239698896932).

The spelling of 135673520401 in words is "one hundred thirty-five billion, six hundred seventy-three million, five hundred twenty thousand, four hundred one".