11969554493 has 32 divisors (see below), whose sum is σ = 13243378176. Its totient is φ = 10751827968.

The previous prime is 11969554477. The next prime is 11969554537. The reversal of 11969554493 is 39445596911.

11969554493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11969554493 - 2⁴ = 11969554477 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 (11969554403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23796080 + ... + 23796582.

It is an arithmetic number, because the mean of its divisors is an integer number (413855568).

Almost surely, 2^11969554493 is an apocalyptic number.

11969554493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11969554493 is a deficient number, since it is larger than the sum of its proper divisors (1273823683).

11969554493 is a wasteful number, since it uses less digits than its factorization.

11969554493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its digits is 5248800, while the sum is 56.

The spelling of 11969554493 in words is "eleven billion, nine hundred sixty-nine million, five hundred fifty-four thousand, four hundred ninety-three".