671066242135 has 4 divisors (see below), whose sum is σ = 805279490568. Its totient is φ = 536852993704.

The previous prime is 671066242103. The next prime is 671066242139. The reversal of 671066242135 is 531242660176.

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 671066242135 - 2⁵ = 671066242103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671066242091 and 671066242100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671066242139) 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, 67106624209 + ... + 67106624218.

It is an arithmetic number, because the mean of its divisors is an integer number (201319872642).

Almost surely, 2^671066242135 is an apocalyptic number.

671066242135 is a deficient number, since it is larger than the sum of its proper divisors (134213248433).

671066242135 is a wasteful number, since it uses less digits than its factorization.

671066242135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134213248432.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 671066242135 in words is "six hundred seventy-one billion, sixty-six million, two hundred forty-two thousand, one hundred thirty-five".