16206375766477 has 8 divisors (see below), whose sum is σ = 17454804573080. Its totient is φ = 14958201890880.

The previous prime is 16206375766439. The next prime is 16206375766489. The reversal of 16206375766477 is 77466757360261.

It can be written as a sum of positive squares in 4 ways, for example, as 2220952361796 + 13985423404681 = 1490286^2 + 3739709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16206375766477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16206375766417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63600702 + ... + 63855007.

It is an arithmetic number, because the mean of its divisors is an integer number (2181850571635).

Almost surely, 2^{16206375766477} is an apocalyptic number.

It is an amenable number.

16206375766477 is a deficient number, since it is larger than the sum of its proper divisors (1248428806603).

16206375766477 is a wasteful number, since it uses less digits than its factorization.

16206375766477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127465503.

The product of its (nonzero) digits is 373403520, while the sum is 67.

The spelling of 16206375766477 in words is "sixteen trillion, two hundred six billion, three hundred seventy-five million, seven hundred sixty-six thousand, four hundred seventy-seven".