11992620855 has 8 divisors (see below), whose sum is σ = 19188193392. Its totient is φ = 6396064448.

The previous prime is 11992620853. The next prime is 11992620859. The reversal of 11992620855 is 55802629911.

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

It is a cyclic number.

It is not a de Polignac number, because 11992620855 - 2¹ = 11992620853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11992620853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399754014 + ... + 399754043.

It is an arithmetic number, because the mean of its divisors is an integer number (2398524174).

Almost surely, 2^11992620855 is an apocalyptic number.

11992620855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11992620855 is a deficient number, since it is larger than the sum of its proper divisors (7195572537).

11992620855 is an equidigital number, since it uses as much as digits as its factorization.

11992620855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799508065.

The product of its (nonzero) digits is 388800, while the sum is 48.

The spelling of 11992620855 in words is "eleven billion, nine hundred ninety-two million, six hundred twenty thousand, eight hundred fifty-five".