11856197280 has 96 divisors (see below), whose sum is σ = 37503648000. Its totient is φ = 3148393472.

The previous prime is 11856197279. The next prime is 11856197303. The reversal of 11856197280 is 8279165811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63046 + ... + 166394.

It is an arithmetic number, because the mean of its divisors is an integer number (390663000).

Almost surely, 2^11856197280 is an apocalyptic number.

11856197280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11856197280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18751824000).

11856197280 is an abundant number, since it is smaller than the sum of its proper divisors (25647450720).

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

11856197280 is a wasteful number, since it uses less digits than its factorization.

11856197280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103606 (or 103598 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 11856197280 in words is "eleven billion, eight hundred fifty-six million, one hundred ninety-seven thousand, two hundred eighty".