3509654142247 has 4 divisors (see below), whose sum is σ = 3828713609736. Its totient is φ = 3190594674760.

The previous prime is 3509654142217. The next prime is 3509654142251. The reversal of 3509654142247 is 7422414569053.

3509654142247 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3509654142247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3509654142194 and 3509654142203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509654142217) 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, 159529733728 + ... + 159529733749.

It is an arithmetic number, because the mean of its divisors is an integer number (957178402434).

Almost surely, 2^{3509654142247} is an apocalyptic number.

3509654142247 is a deficient number, since it is larger than the sum of its proper divisors (319059467489).

3509654142247 is a wasteful number, since it uses less digits than its factorization.

3509654142247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319059467488.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 3509654142247 in words is "three trillion, five hundred nine billion, six hundred fifty-four million, one hundred forty-two thousand, two hundred forty-seven".