2061617577 has 16 divisors (see below), whose sum is σ = 2758536000. Its totient is φ = 1369566464.

The previous prime is 2061617573. The next prime is 2061617603. The reversal of 2061617577 is 7757161602.

It is a cyclic number.

It is not a de Polignac number, because 2061617577 - 2² = 2061617573 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2061617573) 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 15 ways as a sum of consecutive naturals, for example, 1598749 + ... + 1600037.

It is an arithmetic number, because the mean of its divisors is an integer number (172408500).

Almost surely, 2^2061617577 is an apocalyptic number.

It is an amenable number.

2061617577 is a deficient number, since it is larger than the sum of its proper divisors (696918423).

2061617577 is a wasteful number, since it uses less digits than its factorization.

2061617577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 2061617577 is about 45405.0391146181. The cubic root of 2061617577 is about 1272.7292818439.

The spelling of 2061617577 in words is "two billion, sixty-one million, six hundred seventeen thousand, five hundred seventy-seven".