109197878543997 has 128 divisors (see below), whose sum is σ = 158768302694400. Its totient is φ = 66581695488000.

The previous prime is 109197878543983. The next prime is 109197878544017. The reversal of 109197878543997 is 799345878791901.

It is not a de Polignac number, because 109197878543997 - 2¹² = 109197878539901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109197878543917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 32900835504 + ... + 32900838822.

It is an arithmetic number, because the mean of its divisors is an integer number (1240377364800).

Almost surely, 2^{109197878543997} is an apocalyptic number.

It is an amenable number.

109197878543997 is a deficient number, since it is larger than the sum of its proper divisors (49570424150403).

109197878543997 is a wasteful number, since it uses less digits than its factorization.

109197878543997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619.

The product of its (nonzero) digits is 8641624320, while the sum is 87.

The spelling of 109197878543997 in words is "one hundred nine trillion, one hundred ninety-seven billion, eight hundred seventy-eight million, five hundred forty-three thousand, nine hundred ninety-seven".