866200547461601 has 16 divisors (see below), whose sum is σ = 1007270941286400. Its totient is φ = 736566875787600.

The previous prime is 866200547461433. The next prime is 866200547461603. The reversal of 866200547461601 is 106164745002668.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-866200547461601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866200547461603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26230997585 + ... + 26231030606.

It is an arithmetic number, because the mean of its divisors is an integer number (62954433830400).

Almost surely, 2^{866200547461601} is an apocalyptic number.

It is an amenable number.

866200547461601 is a deficient number, since it is larger than the sum of its proper divisors (141070393824799).

866200547461601 is a wasteful number, since it uses less digits than its factorization.

866200547461601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52462028300.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 866200547461601 in words is "eight hundred sixty-six trillion, two hundred billion, five hundred forty-seven million, four hundred sixty-one thousand, six hundred one".