109993732645 has 16 divisors (see below), whose sum is σ = 137782150128. Its totient is φ = 84213181440.

The previous prime is 109993732643. The next prime is 109993732649. The reversal of 109993732645 is 546237399901.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 322813089 + 109670919556 = 17967^2 + 331166^2 .

It is not a de Polignac number, because 109993732645 - 2¹ = 109993732643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109993732645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109993732643) 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, 4862164 + ... + 4884733.

It is an arithmetic number, because the mean of its divisors is an integer number (8611384383).

Almost surely, 2^109993732645 is an apocalyptic number.

It is an amenable number.

109993732645 is a deficient number, since it is larger than the sum of its proper divisors (27788417483).

109993732645 is an equidigital number, since it uses as much as digits as its factorization.

109993732645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747000.

The product of its (nonzero) digits is 11022480, while the sum is 58.

The spelling of 109993732645 in words is "one hundred nine billion, nine hundred ninety-three million, seven hundred thirty-two thousand, six hundred forty-five".