5177027658661 has 2 divisors, whose sum is σ = 5177027658662. Its totient is φ = 5177027658660.

The previous prime is 5177027658653. The next prime is 5177027658697. The reversal of 5177027658661 is 1668567207715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4758968428036 + 418059230625 = 2181506^2 + 646575^2 .

It is a cyclic number.

It is not a de Polignac number, because 5177027658661 - 2³ = 5177027658653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5177027658661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5177027658961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2588513829330 + 2588513829331.

It is an arithmetic number, because the mean of its divisors is an integer number (2588513829331).

Almost surely, 2^{5177027658661} is an apocalyptic number.

It is an amenable number.

5177027658661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5177027658661 is an equidigital number, since it uses as much as digits as its factorization.

5177027658661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29635200, while the sum is 61.

The spelling of 5177027658661 in words is "five trillion, one hundred seventy-seven billion, twenty-seven million, six hundred fifty-eight thousand, six hundred sixty-one".