3667805795249 has 4 divisors (see below), whose sum is σ = 3669419438436. Its totient is φ = 3666192152064.

The previous prime is 3667805795243. The next prime is 3667805795267. The reversal of 3667805795249 is 9425975087663.

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 2232678466225 + 1435127329024 = 1494215^2 + 1197968^2 .

It is a cyclic number.

It is not a de Polignac number, because 3667805795249 - 2⁸ = 3667805794993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3667805795243) 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, 806818184 + ... + 806822729.

It is an arithmetic number, because the mean of its divisors is an integer number (917354859609).

Almost surely, 2^{3667805795249} is an apocalyptic number.

It is an amenable number.

3667805795249 is a deficient number, since it is larger than the sum of its proper divisors (1613643187).

3667805795249 is a wasteful number, since it uses less digits than its factorization.

3667805795249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613643186.

The product of its (nonzero) digits is 685843200, while the sum is 71.

The spelling of 3667805795249 in words is "three trillion, six hundred sixty-seven billion, eight hundred five million, seven hundred ninety-five thousand, two hundred forty-nine".