135673520371 has 4 divisors (see below), whose sum is σ = 136255810392. Its totient is φ = 135091230352.

The previous prime is 135673520351. The next prime is 135673520383. The reversal of 135673520371 is 173025376531.

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 135673520371 - 2⁹ = 135673519859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135673520351) 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, 291144661 + ... + 291145126.

It is an arithmetic number, because the mean of its divisors is an integer number (34063952598).

Almost surely, 2^135673520371 is an apocalyptic number.

135673520371 is a deficient number, since it is larger than the sum of its proper divisors (582290021).

135673520371 is an equidigital number, since it uses as much as digits as its factorization.

135673520371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582290020.

The product of its (nonzero) digits is 396900, while the sum is 43.

The spelling of 135673520371 in words is "one hundred thirty-five billion, six hundred seventy-three million, five hundred twenty thousand, three hundred seventy-one".