611611466621 has 4 divisors (see below), whose sum is σ = 619353384000. Its totient is φ = 603869549244.

The previous prime is 611611466579. The next prime is 611611466623. The reversal of 611611466621 is 126664116116.

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 a de Polignac number, because none of the positive numbers 2^k-611611466621 is a prime.

It is a super-2 number, since 2×611611466621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611611466623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870958571 + ... + 3870958728.

It is an arithmetic number, because the mean of its divisors is an integer number (154838346000).

Almost surely, 2^611611466621 is an apocalyptic number.

It is an amenable number.

611611466621 is a deficient number, since it is larger than the sum of its proper divisors (7741917379).

611611466621 is an equidigital number, since it uses as much as digits as its factorization.

611611466621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741917378.

The product of its digits is 62208, while the sum is 41.

The spelling of 611611466621 in words is "six hundred eleven billion, six hundred eleven million, four hundred sixty-six thousand, six hundred twenty-one".