61660104001677 has 12 divisors (see below), whose sum is σ = 90574164071040. Its totient is φ = 40410011661768.

The previous prime is 61660104001619. The next prime is 61660104001687. The reversal of 61660104001677 is 77610040106616.

61660104001677 is a `hidden beast` number, since 6 + 16 + 60 + 10 + 400 + 167 + 7 = 666.

It is not a de Polignac number, because 61660104001677 - 2⁸ = 61660104001421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61660104001687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58060361053 + ... + 58060362114.

It is an arithmetic number, because the mean of its divisors is an integer number (7547847005920).

Almost surely, 2^{61660104001677} is an apocalyptic number.

It is an amenable number.

61660104001677 is a deficient number, since it is larger than the sum of its proper divisors (28914060069363).

61660104001677 is a wasteful number, since it uses less digits than its factorization.

61660104001677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116120723232 (or 116120723229 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 61660104001677 in words is "sixty-one trillion, six hundred sixty billion, one hundred four million, one thousand, six hundred seventy-seven".