611223645042 has 24 divisors (see below), whose sum is σ = 1324379356560. Its totient is φ = 203731759800.

The previous prime is 611223645041. The next prime is 611223645073. The reversal of 611223645042 is 240546322116.

611223645042 is a `hidden beast` number, since 6 + 1 + 1 + 2 + 2 + 3 + 645 + 0 + 4 + 2 = 666.

It is a super-2 number, since 2×611223645042² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 611223644988 and 611223645006.

It is not an unprimeable number, because it can be changed into a prime (611223645041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383692 + ... + 1170327.

It is an arithmetic number, because the mean of its divisors is an integer number (55182473190).

Almost surely, 2^611223645042 is an apocalyptic number.

611223645042 is an abundant number, since it is smaller than the sum of its proper divisors (713155711518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611223645042 is a wasteful number, since it uses less digits than its factorization.

611223645042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575878 (or 1575875 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 611223645042 its reverse (240546322116), we get a palindrome (851769967158).

The spelling of 611223645042 in words is "six hundred eleven billion, two hundred twenty-three million, six hundred forty-five thousand, forty-two".