6361657856811 has 24 divisors (see below), whose sum is σ = 9219408625440. Its totient is φ = 4227101174400.

The previous prime is 6361657856767. The next prime is 6361657856831. The reversal of 6361657856811 is 1186587561636.

It is a happy number.

6361657856811 is a `hidden beast` number, since 6 + 3 + 6 + 1 + 6 + 57 + 8 + 568 + 11 = 666.

It is not a de Polignac number, because 6361657856811 - 2¹¹ = 6361657854763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6361657856831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34281985 + ... + 34467053.

It is an arithmetic number, because the mean of its divisors is an integer number (384142026060).

Almost surely, 2^{6361657856811} is an apocalyptic number.

6361657856811 is a deficient number, since it is larger than the sum of its proper divisors (2857750768629).

6361657856811 is a wasteful number, since it uses less digits than its factorization.

6361657856811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197667 (or 197664 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 6361657856811 in words is "six trillion, three hundred sixty-one billion, six hundred fifty-seven million, eight hundred fifty-six thousand, eight hundred eleven".