611321440564 has 12 divisors (see below), whose sum is σ = 1116326109024. Its totient is φ = 292371123704.

The previous prime is 611321440553. The next prime is 611321440571. The reversal of 611321440564 is 465044123116.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3322399042 + ... + 3322399225.

It is an arithmetic number, because the mean of its divisors is an integer number (93027175752).

Almost surely, 2^611321440564 is an apocalyptic number.

It is an amenable number.

611321440564 is a deficient number, since it is larger than the sum of its proper divisors (505004668460).

611321440564 is a wasteful number, since it uses less digits than its factorization.

611321440564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644798294 (or 6644798292 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 611321440564 in words is "six hundred eleven billion, three hundred twenty-one million, four hundred forty thousand, five hundred sixty-four".