135375621865 has 8 divisors (see below), whose sum is σ = 177218995968. Its totient is φ = 98454997680.

The previous prime is 135375621853. The next prime is 135375621877. The reversal of 135375621865 is 568126573531.

It is an interprime number because it is at equal distance from previous prime (135375621853) and next prime (135375621877).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135375621865 - 2²⁹ = 134838750953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230687417 + ... + 1230687526.

It is an arithmetic number, because the mean of its divisors is an integer number (22152374496).

Almost surely, 2^135375621865 is an apocalyptic number.

It is an amenable number.

135375621865 is a deficient number, since it is larger than the sum of its proper divisors (41843374103).

135375621865 is a wasteful number, since it uses less digits than its factorization.

135375621865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461374959.

The product of its digits is 4536000, while the sum is 52.

The spelling of 135375621865 in words is "one hundred thirty-five billion, three hundred seventy-five million, six hundred twenty-one thousand, eight hundred sixty-five".