7135809742291 has 4 divisors (see below), whose sum is σ = 7142163981832. Its totient is φ = 7129455502752.

The previous prime is 7135809742283. The next prime is 7135809742423. The reversal of 7135809742291 is 1922479085317.

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 7135809742291 - 2³ = 7135809742283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7135809742241) 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, 3177118086 + ... + 3177120331.

It is an arithmetic number, because the mean of its divisors is an integer number (1785540995458).

Almost surely, 2^{7135809742291} is an apocalyptic number.

7135809742291 is a deficient number, since it is larger than the sum of its proper divisors (6354239541).

7135809742291 is a wasteful number, since it uses less digits than its factorization.

7135809742291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354239540.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 7135809742291 in words is "seven trillion, one hundred thirty-five billion, eight hundred nine million, seven hundred forty-two thousand, two hundred ninety-one".