611564502241 has 32 divisors (see below), whose sum is σ = 811858176000. Its totient is φ = 455824409040.

The previous prime is 611564502223. The next prime is 611564502271. The reversal of 611564502241 is 142205465116.

It is not a de Polignac number, because 611564502241 - 2¹⁵ = 611564469473 is a prime.

It is a super-2 number, since 2×611564502241² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611564502241.

It is not an unprimeable number, because it can be changed into a prime (611564502271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3436911 + ... + 3610468.

It is an arithmetic number, because the mean of its divisors is an integer number (25370568000).

Almost surely, 2^611564502241 is an apocalyptic number.

It is an amenable number.

611564502241 is a deficient number, since it is larger than the sum of its proper divisors (200293673759).

611564502241 is a wasteful number, since it uses less digits than its factorization.

611564502241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7047434 (or 7047420 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 611564502241 its reverse (142205465116), we get a palindrome (753769967357).

The spelling of 611564502241 in words is "six hundred eleven billion, five hundred sixty-four million, five hundred two thousand, two hundred forty-one".