21119486472 has 288 divisors, whose sum is σ = 69003342720. Its totient is φ = 5814547200.

The previous prime is 21119486459. The next prime is 21119486473. The reversal of 21119486472 is 27468491112.

21119486472 is a `hidden beast` number, since 2 + 1 + 11 + 94 + 86 + 472 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21119486473) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11108722 + ... + 11110622.

It is an arithmetic number, because the mean of its divisors is an integer number (239594940).

Almost surely, 2^21119486472 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 21119486472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34501671360).

21119486472 is an abundant number, since it is smaller than the sum of its proper divisors (47883856248).

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

21119486472 is a wasteful number, since it uses less digits than its factorization.

21119486472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041 (or 2027 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 21119486472 in words is "twenty-one billion, one hundred nineteen million, four hundred eighty-six thousand, four hundred seventy-two".