56871198705109 has 8 divisors (see below), whose sum is σ = 59225273448192. Its totient is φ = 54549593958720.

The previous prime is 56871198705103. The next prime is 56871198705119. The reversal of 56871198705109 is 90150789117865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56871198705109 - 2⁷ = 56871198704981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56871198705103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8117495599 + ... + 8117502604.

It is an arithmetic number, because the mean of its divisors is an integer number (7403159181024).

Almost surely, 2^{56871198705109} is an apocalyptic number.

It is an amenable number.

56871198705109 is a deficient number, since it is larger than the sum of its proper divisors (2354074743083).

56871198705109 is a wasteful number, since it uses less digits than its factorization.

56871198705109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16234998347.

The product of its (nonzero) digits is 38102400, while the sum is 67.

The spelling of 56871198705109 in words is "fifty-six trillion, eight hundred seventy-one billion, one hundred ninety-eight million, seven hundred five thousand, one hundred nine".