611606212631 has 4 divisors (see below), whose sum is σ = 612862078032. Its totient is φ = 610350347232.

The previous prime is 611606212621. The next prime is 611606212699. The reversal of 611606212631 is 136212606116.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611606212631 is a prime.

It is a super-2 number, since 2×611606212631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 611606212591 and 611606212600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611606212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627931970 + ... + 627932943.

It is an arithmetic number, because the mean of its divisors is an integer number (153215519508).

Almost surely, 2^611606212631 is an apocalyptic number.

611606212631 is a deficient number, since it is larger than the sum of its proper divisors (1255865401).

611606212631 is a wasteful number, since it uses less digits than its factorization.

611606212631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255865400.

The product of its (nonzero) digits is 15552, while the sum is 35.

Adding to 611606212631 its reverse (136212606116), we get a palindrome (747818818747).

The spelling of 611606212631 in words is "six hundred eleven billion, six hundred six million, two hundred twelve thousand, six hundred thirty-one".