61003564257173 has 4 divisors (see below), whose sum is σ = 61228669660608. Its totient is φ = 60778458853740.

The previous prime is 61003564257137. The next prime is 61003564257217. The reversal of 61003564257173 is 37175246530016.

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 61003564257173 - 2¹⁴ = 61003564240789 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 (61003564257773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112552701311 + ... + 112552701852.

It is an arithmetic number, because the mean of its divisors is an integer number (15307167415152).

Almost surely, 2^{61003564257173} is an apocalyptic number.

It is an amenable number.

61003564257173 is a deficient number, since it is larger than the sum of its proper divisors (225105403435).

61003564257173 is a wasteful number, since it uses less digits than its factorization.

61003564257173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225105403434.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 61003564257173 in words is "sixty-one trillion, three billion, five hundred sixty-four million, two hundred fifty-seven thousand, one hundred seventy-three".