611011005513 has 4 divisors (see below), whose sum is σ = 814681340688. Its totient is φ = 407340670340.

The previous prime is 611011005511. The next prime is 611011005529. The reversal of 611011005513 is 315500110116.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611011005513 - 2¹ = 611011005511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (611011005511) 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, 101835167583 + ... + 101835167588.

It is an arithmetic number, because the mean of its divisors is an integer number (203670335172).

Almost surely, 2^611011005513 is an apocalyptic number.

It is an amenable number.

611011005513 is a deficient number, since it is larger than the sum of its proper divisors (203670335175).

611011005513 is a wasteful number, since it uses less digits than its factorization.

611011005513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203670335174.

The product of its (nonzero) digits is 450, while the sum is 24.

Adding to 611011005513 its reverse (315500110116), we get a palindrome (926511115629).

The spelling of 611011005513 in words is "six hundred eleven billion, eleven million, five thousand, five hundred thirteen".