109568785897 has 4 divisors (see below), whose sum is σ = 109645569936. Its totient is φ = 109492001860.

The previous prime is 109568785877. The next prime is 109568785939. The reversal of 109568785897 is 798587865901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109568785897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109568785847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38389879 + ... + 38392732.

It is an arithmetic number, because the mean of its divisors is an integer number (27411392484).

Almost surely, 2^109568785897 is an apocalyptic number.

It is an amenable number.

109568785897 is a deficient number, since it is larger than the sum of its proper divisors (76784039).

109568785897 is an equidigital number, since it uses as much as digits as its factorization.

109568785897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76784038.

The product of its (nonzero) digits is 304819200, while the sum is 73.

The spelling of 109568785897 in words is "one hundred nine billion, five hundred sixty-eight million, seven hundred eighty-five thousand, eight hundred ninety-seven".