21904671360 has 1152 divisors, whose sum is σ = 92168228160. Its totient is φ = 4370595840.

The previous prime is 21904671319. The next prime is 21904671389. The reversal of 21904671360 is 6317640912.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1152877431 + ... + 1152877449.

Almost surely, 2^21904671360 is an apocalyptic number.

21904671360 is a gapful number since it is divisible by the number (20) 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 21904671360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46084114080).

21904671360 is an abundant number, since it is smaller than the sum of its proper divisors (70263556800).

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

21904671360 is a wasteful number, since it uses less digits than its factorization.

21904671360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 21904671360 in words is "twenty-one billion, nine hundred four million, six hundred seventy-one thousand, three hundred sixty".