109721499793 has 16 divisors (see below), whose sum is σ = 115122272256. Its totient is φ = 104374662480.

The previous prime is 109721499787. The next prime is 109721499809. The reversal of 109721499793 is 397994127901.

It is a cyclic number.

It is not a de Polignac number, because 109721499793 - 2⁵ = 109721499761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109721490793) 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, 3493546 + ... + 3524812.

It is an arithmetic number, because the mean of its divisors is an integer number (7195142016).

Almost surely, 2^109721499793 is an apocalyptic number.

It is an amenable number.

109721499793 is a deficient number, since it is larger than the sum of its proper divisors (5400772463).

109721499793 is a wasteful number, since it uses less digits than its factorization.

109721499793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32124.

The product of its (nonzero) digits is 7715736, while the sum is 61.

The spelling of 109721499793 in words is "one hundred nine billion, seven hundred twenty-one million, four hundred ninety-nine thousand, seven hundred ninety-three".