61111666610 has 8 divisors (see below), whose sum is σ = 110000999916. Its totient is φ = 24444666640.

The previous prime is 61111666579. The next prime is 61111666619. The reversal of 61111666610 is 1666611116.

It can be written as a sum of positive squares in 2 ways, for example, as 61054950649 + 56715961 = 247093^2 + 7531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61111666619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055583321 + ... + 3055583340.

Almost surely, 2^61111666610 is an apocalyptic number.

61111666610 is a deficient number, since it is larger than the sum of its proper divisors (48889333306).

61111666610 is a wasteful number, since it uses less digits than its factorization.

61111666610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111166668.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 61111666610 in words is "sixty-one billion, one hundred eleven million, six hundred sixty-six thousand, six hundred ten".