3500681749489 has 4 divisors (see below), whose sum is σ = 3513139691940. Its totient is φ = 3488223807040.

The previous prime is 3500681749471. The next prime is 3500681749619. The reversal of 3500681749489 is 9849471860053.

3500681749489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1218065395600 + 2282616353889 = 1103660^2 + 1510833^2 .

It is a cyclic number.

It is not a de Polignac number, because 3500681749489 - 2⁵ = 3500681749457 is a prime.

It is a super-2 number, since 2×3500681749489² (a number of 26 digits) contains 22 as substring.

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 3500681749489.

It is not an unprimeable number, because it can be changed into a prime (3500681749459) 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, 6228970804 + ... + 6228971365.

It is an arithmetic number, because the mean of its divisors is an integer number (878284922985).

Almost surely, 2^{3500681749489} is an apocalyptic number.

It is an amenable number.

3500681749489 is a deficient number, since it is larger than the sum of its proper divisors (12457942451).

3500681749489 is a wasteful number, since it uses less digits than its factorization.

3500681749489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12457942450.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 3500681749489 in words is "three trillion, five hundred billion, six hundred eighty-one million, seven hundred forty-nine thousand, four hundred eighty-nine".