11927578548 has 96 divisors (see below), whose sum is σ = 30463171200. Its totient is φ = 3617865216.

The previous prime is 11927578547. The next prime is 11927578561. The reversal of 11927578548 is 84587572911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11927578547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1297986 + ... + 1307142.

It is an arithmetic number, because the mean of its divisors is an integer number (317324700).

Almost surely, 2^11927578548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11927578548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15231585600).

11927578548 is an abundant number, since it is smaller than the sum of its proper divisors (18535592652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11927578548 is a wasteful number, since it uses less digits than its factorization.

11927578548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9409 (or 9407 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 57.

The spelling of 11927578548 in words is "eleven billion, nine hundred twenty-seven million, five hundred seventy-eight thousand, five hundred forty-eight".