16211201739877 has 2 divisors, whose sum is σ = 16211201739878. Its totient is φ = 16211201739876.

The previous prime is 16211201739853. The next prime is 16211201739893. The reversal of 16211201739877 is 77893710211261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11677023471556 + 4534178268321 = 3417166^2 + 2129361^2 .

It is a cyclic number.

It is not a de Polignac number, because 16211201739877 - 2²⁷ = 16211067522149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16211201739077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8105600869938 + 8105600869939.

It is an arithmetic number, because the mean of its divisors is an integer number (8105600869939).

Almost surely, 2^{16211201739877} is an apocalyptic number.

It is an amenable number.

16211201739877 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211201739877 is an equidigital number, since it uses as much as digits as its factorization.

16211201739877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 55.

The spelling of 16211201739877 in words is "sixteen trillion, two hundred eleven billion, two hundred one million, seven hundred thirty-nine thousand, eight hundred seventy-seven".