610881720053 has 4 divisors (see below), whose sum is σ = 666416421888. Its totient is φ = 555347018220.

The previous prime is 610881720049. The next prime is 610881720067. The reversal of 610881720053 is 350027188016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 610881720053 - 2² = 610881720049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610881722053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27767350901 + ... + 27767350922.

It is an arithmetic number, because the mean of its divisors is an integer number (166604105472).

Almost surely, 2^610881720053 is an apocalyptic number.

It is an amenable number.

610881720053 is a deficient number, since it is larger than the sum of its proper divisors (55534701835).

610881720053 is a wasteful number, since it uses less digits than its factorization.

610881720053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55534701834.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 610881720053 in words is "six hundred ten billion, eight hundred eighty-one million, seven hundred twenty thousand, fifty-three".