11855480919 has 8 divisors (see below), whose sum is σ = 15886742400. Its totient is φ = 7863936696.

The previous prime is 11855480881. The next prime is 11855480933. The reversal of 11855480919 is 91908455811.

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

It is not a de Polignac number, because 11855480919 - 2¹² = 11855476823 is a prime.

It is a super-2 number, since 2×11855480919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11855480999) 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, 9928617 + ... + 9929810.

It is an arithmetic number, because the mean of its divisors is an integer number (1985842800).

Almost surely, 2^11855480919 is an apocalyptic number.

11855480919 is a deficient number, since it is larger than the sum of its proper divisors (4031261481).

11855480919 is a wasteful number, since it uses less digits than its factorization.

11855480919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19858629.

The product of its (nonzero) digits is 518400, while the sum is 51.

The spelling of 11855480919 in words is "eleven billion, eight hundred fifty-five million, four hundred eighty thousand, nine hundred nineteen".