135657347442673 has 4 divisors (see below), whose sum is σ = 155036968505920. Its totient is φ = 116277726379428.

The previous prime is 135657347442577. The next prime is 135657347442691. The reversal of 135657347442673 is 376244743756531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135657347442673 - 2⁹ = 135657347442161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135657347442599 and 135657347442608.

It is not an unprimeable number, because it can be changed into a prime (135657347242673) 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, 9689810531613 + ... + 9689810531626.

It is an arithmetic number, because the mean of its divisors is an integer number (38759242126480).

Almost surely, 2^{135657347442673} is an apocalyptic number.

It is an amenable number.

135657347442673 is a deficient number, since it is larger than the sum of its proper divisors (19379621063247).

135657347442673 is an equidigital number, since it uses as much as digits as its factorization.

135657347442673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19379621063246.

The product of its digits is 1066867200, while the sum is 67.

The spelling of 135657347442673 in words is "one hundred thirty-five trillion, six hundred fifty-seven billion, three hundred forty-seven million, four hundred forty-two thousand, six hundred seventy-three".