61120066164 has 12 divisors (see below), whose sum is σ = 142613487744. Its totient is φ = 20373355384.

The previous prime is 61120066129. The next prime is 61120066193. The reversal of 61120066164 is 46166002116.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 2546669412 + ... + 2546669435.

It is an arithmetic number, because the mean of its divisors is an integer number (11884457312).

Almost surely, 2^61120066164 is an apocalyptic number.

It is an amenable number.

61120066164 is an abundant number, since it is smaller than the sum of its proper divisors (81493421580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61120066164 is a wasteful number, since it uses less digits than its factorization.

61120066164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093338854 (or 5093338852 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 61120066164 in words is "sixty-one billion, one hundred twenty million, sixty-six thousand, one hundred sixty-four".