21410545320 has 192 divisors, whose sum is σ = 72530640000. Its totient is φ = 5680274688.

The previous prime is 21410545313. The next prime is 21410545327. The reversal of 21410545320 is 2354501412.

21410545320 is a `hidden beast` number, since 21 + 4 + 105 + 4 + 532 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21410545313) and next prime (21410545327).

It is a super-2 number, since 2×21410545320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21410545327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1928746 + ... + 1939814.

It is an arithmetic number, because the mean of its divisors is an integer number (377763750).

Almost surely, 2^21410545320 is an apocalyptic number.

21410545320 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 21410545320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36265320000).

21410545320 is an abundant number, since it is smaller than the sum of its proper divisors (51120094680).

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

21410545320 is a wasteful number, since it uses less digits than its factorization.

21410545320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11294 (or 11278 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 21410545320 in words is "twenty-one billion, four hundred ten million, five hundred forty-five thousand, three hundred twenty".