61010511104 has 18 divisors (see below), whose sum is σ = 121782700410. Its totient is φ = 30505255424.

The previous prime is 61010511101. The next prime is 61010511143. The reversal of 61010511104 is 40111501016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50736661504 + 10273849600 = 225248^2 + 101360^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61010511101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119160899 + ... + 119161410.

Almost surely, 2^61010511104 is an apocalyptic number.

61010511104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61010511104 is a deficient number, since it is larger than the sum of its proper divisors (60772189306).

61010511104 is an equidigital number, since it uses as much as digits as its factorization.

61010511104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238322325 (or 238322311 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The spelling of 61010511104 in words is "sixty-one billion, ten million, five hundred eleven thousand, one hundred four".