1663461476677 has 16 divisors (see below), whose sum is σ = 2233458767232. Its totient is φ = 1196495766720.

The previous prime is 1663461476669. The next prime is 1663461476707. The reversal of 1663461476677 is 7766741643661.

It is a cyclic number.

It is not a de Polignac number, because 1663461476677 - 2³ = 1663461476669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663461476647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830898838 + ... + 830900839.

It is an arithmetic number, because the mean of its divisors is an integer number (139591172952).

Almost surely, 2^{1663461476677} is an apocalyptic number.

It is an amenable number.

1663461476677 is a deficient number, since it is larger than the sum of its proper divisors (569997290555).

1663461476677 is a wasteful number, since it uses less digits than its factorization.

1663461476677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661799708.

The product of its digits is 128024064, while the sum is 64.

The spelling of 1663461476677 in words is "one trillion, six hundred sixty-three billion, four hundred sixty-one million, four hundred seventy-six thousand, six hundred seventy-seven".