109440006491 has 16 divisors (see below), whose sum is σ = 112514482080. Its totient is φ = 106385326080.

The previous prime is 109440006469. The next prime is 109440006601. The reversal of 109440006491 is 194600044901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109440006491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109440006421) 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, 27337496 + ... + 27341498.

It is an arithmetic number, because the mean of its divisors is an integer number (7032155130).

Almost surely, 2^109440006491 is an apocalyptic number.

109440006491 is a deficient number, since it is larger than the sum of its proper divisors (3074475589).

109440006491 is a wasteful number, since it uses less digits than its factorization.

109440006491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 109440006491 in words is "one hundred nine billion, four hundred forty million, six thousand, four hundred ninety-one".