61601175253 has 32 divisors (see below), whose sum is σ = 65886163200. Its totient is φ = 57560731200.

The previous prime is 61601175227. The next prime is 61601175329. The reversal of 61601175253 is 35257110616.

It is a de Polignac number, because none of the positive numbers 2^k-61601175253 is a prime.

It is a super-2 number, since 2×61601175253² (a number of 22 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 (61601175203) 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 31 ways as a sum of consecutive naturals, for example, 158357583 + ... + 158357971.

It is an arithmetic number, because the mean of its divisors is an integer number (2058942600).

Almost surely, 2^61601175253 is an apocalyptic number.

It is an amenable number.

61601175253 is a deficient number, since it is larger than the sum of its proper divisors (4284987947).

61601175253 is an equidigital number, since it uses as much as digits as its factorization.

61601175253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

Adding to 61601175253 its reverse (35257110616), we get a palindrome (96858285869).

The spelling of 61601175253 in words is "sixty-one billion, six hundred one million, one hundred seventy-five thousand, two hundred fifty-three".