11978354093 has 18 divisors (see below), whose sum is σ = 12357904734. Its totient is φ = 11609991744.

The previous prime is 11978354083. The next prime is 11978354099. The reversal of 11978354093 is 39045387911.

It can be written as a sum of positive squares in 9 ways, for example, as 223891369 + 11754462724 = 14963^2 + 108418^2 .

It is not a de Polignac number, because 11978354093 - 2⁸ = 11978353837 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 (11978354099) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69238955 + ... + 69239127.

It is an arithmetic number, because the mean of its divisors is an integer number (686550263).

Almost surely, 2^11978354093 is an apocalyptic number.

It is an amenable number.

11978354093 is a deficient number, since it is larger than the sum of its proper divisors (379550641).

11978354093 is an frugal number, since it uses more digits than its factorization.

11978354093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 11978354093 in words is "eleven billion, nine hundred seventy-eight million, three hundred fifty-four thousand, ninety-three".