7135488057521 has 4 divisors (see below), whose sum is σ = 7162014035700. Its totient is φ = 7108962079344.

The previous prime is 7135488057499. The next prime is 7135488057569. The reversal of 7135488057521 is 1257508845317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2999959097521 + 4135528960000 = 1732039^2 + 2033600^2 .

It is a cyclic number.

It is not a de Polignac number, because 7135488057521 - 2³⁴ = 7118308188337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7135488057821) 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, 13262988686 + ... + 13262989223.

It is an arithmetic number, because the mean of its divisors is an integer number (1790503508925).

Almost surely, 2^{7135488057521} is an apocalyptic number.

It is an amenable number.

7135488057521 is a deficient number, since it is larger than the sum of its proper divisors (26525978179).

7135488057521 is a wasteful number, since it uses less digits than its factorization.

7135488057521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26525978178.

The product of its (nonzero) digits is 9408000, while the sum is 56.

The spelling of 7135488057521 in words is "seven trillion, one hundred thirty-five billion, four hundred eighty-eight million, fifty-seven thousand, five hundred twenty-one".