861338337801 has 16 divisors (see below), whose sum is σ = 1187055840768. Its totient is φ = 554971881600.

The previous prime is 861338337791. The next prime is 861338337823. The reversal of 861338337801 is 108733833168.

It is not a de Polignac number, because 861338337801 - 2³¹ = 859190854153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861338337841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6014446 + ... + 6155991.

It is an arithmetic number, because the mean of its divisors is an integer number (74190990048).

Almost surely, 2^861338337801 is an apocalyptic number.

It is an amenable number.

861338337801 is a deficient number, since it is larger than the sum of its proper divisors (325717502967).

861338337801 is a wasteful number, since it uses less digits than its factorization.

861338337801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171232.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 861338337801 in words is "eight hundred sixty-one billion, three hundred thirty-eight million, three hundred thirty-seven thousand, eight hundred one".