611220245543 has 8 divisors (see below), whose sum is σ = 611846518800. Its totient is φ = 610594257600.

The previous prime is 611220245483. The next prime is 611220245549. The reversal of 611220245543 is 345542022116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611220245543 - 2¹⁸ = 611219983399 is a prime.

It is a super-2 number, since 2×611220245543² (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 (611220245549) 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 7 ways as a sum of consecutive naturals, for example, 4355021 + ... + 4493177.

It is an arithmetic number, because the mean of its divisors is an integer number (76480814850).

Almost surely, 2^611220245543 is an apocalyptic number.

611220245543 is a deficient number, since it is larger than the sum of its proper divisors (626273257).

611220245543 is a wasteful number, since it uses less digits than its factorization.

611220245543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142657.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 611220245543 its reverse (345542022116), we get a palindrome (956762267659).

The spelling of 611220245543 in words is "six hundred eleven billion, two hundred twenty million, two hundred forty-five thousand, five hundred forty-three".