3540638734669 has 8 divisors (see below), whose sum is σ = 3634121526840. Its totient is φ = 3447495264000.

The previous prime is 3540638734651. The next prime is 3540638734687. The reversal of 3540638734669 is 9664378360453.

It is a happy number.

3540638734669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3540638734651) and next prime (3540638734687).

It can be written as a sum of positive squares in 4 ways, for example, as 6381613225 + 3534257121444 = 79885^2 + 1879962^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3540638734669 - 2⁵ = 3540638734637 is a prime.

It is a super-2 number, since 2×3540638734669² (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 3540638734669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3540638734609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84809232 + ... + 84850969.

It is an arithmetic number, because the mean of its divisors is an integer number (454265190855).

Almost surely, 2^{3540638734669} is an apocalyptic number.

It is an amenable number.

3540638734669 is a deficient number, since it is larger than the sum of its proper divisors (93482792171).

3540638734669 is a wasteful number, since it uses less digits than its factorization.

3540638734669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169660751.

The product of its (nonzero) digits is 235146240, while the sum is 64.

The spelling of 3540638734669 in words is "three trillion, five hundred forty billion, six hundred thirty-eight million, seven hundred thirty-four thousand, six hundred sixty-nine".