61145420176 has 15 divisors (see below), whose sum is σ = 118471168011. Its totient is φ = 30572215536.

The previous prime is 61145420159. The next prime is 61145420183. The reversal of 61145420176 is 67102454116.

The square root of 61145420176 is 247276.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 958195 + ... + 1020013.

Almost surely, 2^61145420176 is an apocalyptic number.

61145420176 is the 247276-th square number.

It is an amenable number.

61145420176 is a deficient number, since it is larger than the sum of its proper divisors (57325747835).

61145420176 is an frugal number, since it uses more digits than its factorization.

61145420176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123646 (or 61821 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 61145420176 in words is "sixty-one billion, one hundred forty-five million, four hundred twenty thousand, one hundred seventy-six".