3645467078839 has 4 divisors (see below), whose sum is σ = 3723030208224. Its totient is φ = 3567903949456.

The previous prime is 3645467078819. The next prime is 3645467078899. The reversal of 3645467078839 is 9388707645463.

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

It is a cyclic number.

It is not a de Polignac number, because 3645467078839 - 2¹⁹ = 3645466554551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645467078809) 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, 38781564622 + ... + 38781564715.

It is an arithmetic number, because the mean of its divisors is an integer number (930757552056).

Almost surely, 2^{3645467078839} is an apocalyptic number.

3645467078839 is a deficient number, since it is larger than the sum of its proper divisors (77563129385).

3645467078839 is an equidigital number, since it uses as much as digits as its factorization.

3645467078839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77563129384.

The product of its (nonzero) digits is 731566080, while the sum is 70.

The spelling of 3645467078839 in words is "three trillion, six hundred forty-five billion, four hundred sixty-seven million, seventy-eight thousand, eight hundred thirty-nine".