66016255619811 has 64 divisors (see below), whose sum is σ = 101285858508800. Its totient is φ = 37465702053120.

The previous prime is 66016255619803. The next prime is 66016255619861. The reversal of 66016255619811 is 11891655261066.

It is not a de Polignac number, because 66016255619811 - 2³ = 66016255619803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66016255619861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6854553966 + ... + 6854563596.

It is an arithmetic number, because the mean of its divisors is an integer number (1582591539200).

Almost surely, 2^{66016255619811} is an apocalyptic number.

66016255619811 is a deficient number, since it is larger than the sum of its proper divisors (35269602888989).

66016255619811 is a wasteful number, since it uses less digits than its factorization.

66016255619811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656.

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 66016255619811 in words is "sixty-six trillion, sixteen billion, two hundred fifty-five million, six hundred nineteen thousand, eight hundred eleven".