61111081753 has 2 divisors, whose sum is σ = 61111081754. Its totient is φ = 61111081752.

The previous prime is 61111081747. The next prime is 61111081771. The reversal of 61111081753 is 35718011116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44981319744 + 16129762009 = 212088^2 + 127003^2 .

It is a cyclic number.

It is not a de Polignac number, because 61111081753 - 2²⁵ = 61077527321 is a prime.

It is not a weakly prime, because it can be changed into another prime (61111081153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555540876 + 30555540877.

It is an arithmetic number, because the mean of its divisors is an integer number (30555540877).

Almost surely, 2^61111081753 is an apocalyptic number.

It is an amenable number.

61111081753 is a deficient number, since it is larger than the sum of its proper divisors (1).

61111081753 is an equidigital number, since it uses as much as digits as its factorization.

61111081753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 34.

Adding to 61111081753 its reverse (35718011116), we get a palindrome (96829092869).

The spelling of 61111081753 in words is "sixty-one billion, one hundred eleven million, eighty-one thousand, seven hundred fifty-three".