653123310061 has 4 divisors (see below), whose sum is σ = 670775291452. Its totient is φ = 635471328672.

The previous prime is 653123310043. The next prime is 653123310067. The reversal of 653123310061 is 160013321356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 604428502500 + 48694807561 = 777450^2 + 220669^2 .

It is a cyclic number.

It is not a de Polignac number, because 653123310061 - 2⁹ = 653123309549 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 (653123310067) 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 3 ways as a sum of consecutive naturals, for example, 8825990640 + ... + 8825990713.

It is an arithmetic number, because the mean of its divisors is an integer number (167693822863).

Almost surely, 2^653123310061 is an apocalyptic number.

It is an amenable number.

653123310061 is a deficient number, since it is larger than the sum of its proper divisors (17651981391).

653123310061 is a wasteful number, since it uses less digits than its factorization.

653123310061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651981390.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 653123310061 in words is "six hundred fifty-three billion, one hundred twenty-three million, three hundred ten thousand, sixty-one".