611303134021 has 4 divisors (see below), whose sum is σ = 643476983200. Its totient is φ = 579129284844.

The previous prime is 611303134019. The next prime is 611303134037. The reversal of 611303134021 is 120431303116.

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 not a de Polignac number, because 611303134021 - 2¹ = 611303134019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611303134621) 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, 16086924561 + ... + 16086924598.

It is an arithmetic number, because the mean of its divisors is an integer number (160869245800).

Almost surely, 2^611303134021 is an apocalyptic number.

It is an amenable number.

611303134021 is a deficient number, since it is larger than the sum of its proper divisors (32173849179).

611303134021 is a wasteful number, since it uses less digits than its factorization.

611303134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32173849178.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 611303134021 its reverse (120431303116), we get a palindrome (731734437137).

The spelling of 611303134021 in words is "six hundred eleven billion, three hundred three million, one hundred thirty-four thousand, twenty-one".