3755679778805 has 18 divisors (see below), whose sum is σ = 4552409995974. Its totient is φ = 2974449192000.

The previous prime is 3755679778751. The next prime is 3755679778811. The reversal of 3755679778805 is 5088779765573.

It can be written as a sum of positive squares in 9 ways, for example, as 1367267167204 + 2388412611601 = 1169302^2 + 1545449^2 .

It is not a de Polignac number, because 3755679778805 - 2¹⁸ = 3755679516661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 437669615 + ... + 437678195.

It is an arithmetic number, because the mean of its divisors is an integer number (252911666443).

Almost surely, 2^{3755679778805} is an apocalyptic number.

It is an amenable number.

3755679778805 is a deficient number, since it is larger than the sum of its proper divisors (796730217169).

3755679778805 is an frugal number, since it uses more digits than its factorization.

3755679778805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17369 (or 8687 counting only the distinct ones).

The product of its (nonzero) digits is 3111696000, while the sum is 77.

The spelling of 3755679778805 in words is "three trillion, seven hundred fifty-five billion, six hundred seventy-nine million, seven hundred seventy-eight thousand, eight hundred five".