11969693854 has 8 divisors (see below), whose sum is σ = 18017985240. Its totient is φ = 5963698776.

The previous prime is 11969693851. The next prime is 11969693861. The reversal of 11969693854 is 45839696911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11969693792 and 11969693801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11969693851) 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, 10573369 + ... + 10574500.

It is an arithmetic number, because the mean of its divisors is an integer number (2252248155).

Almost surely, 2^11969693854 is an apocalyptic number.

11969693854 is a deficient number, since it is larger than the sum of its proper divisors (6048291386).

11969693854 is a wasteful number, since it uses less digits than its factorization.

11969693854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21148154.

The product of its digits is 12597120, while the sum is 61.

The spelling of 11969693854 in words is "eleven billion, nine hundred sixty-nine million, six hundred ninety-three thousand, eight hundred fifty-four".