16671264740477 has 2 divisors, whose sum is σ = 16671264740478. Its totient is φ = 16671264740476.

The previous prime is 16671264740341. The next prime is 16671264740531. The reversal of 16671264740477 is 77404746217661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15356162665636 + 1315102074841 = 3918694^2 + 1146779^2 .

It is a cyclic number.

It is not a de Polignac number, because 16671264740477 - 2¹⁶ = 16671264674941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16671264740777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335632370238 + 8335632370239.

It is an arithmetic number, because the mean of its divisors is an integer number (8335632370239).

Almost surely, 2^{16671264740477} is an apocalyptic number.

It is an amenable number.

16671264740477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16671264740477 is an equidigital number, since it uses as much as digits as its factorization.

16671264740477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66382848, while the sum is 62.

The spelling of 16671264740477 in words is "sixteen trillion, six hundred seventy-one billion, two hundred sixty-four million, seven hundred forty thousand, four hundred seventy-seven".