21140300610 has 192 divisors, whose sum is σ = 65949811200. Its totient is φ = 4629911040.

The previous prime is 21140300593. The next prime is 21140300627. The reversal of 21140300610 is 1600304112.

It is a happy number.

21140300610 is a `hidden beast` number, since 2 + 11 + 40 + 3 + 0 + 0 + 610 = 666.

It is an interprime number because it is at equal distance from previous prime (21140300593) and next prime (21140300627).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 587416 + ... + 622364.

It is an arithmetic number, because the mean of its divisors is an integer number (343488600).

Almost surely, 2^21140300610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21140300610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32974905600).

21140300610 is an abundant number, since it is smaller than the sum of its proper divisors (44809510590).

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

21140300610 is a wasteful number, since it uses less digits than its factorization.

21140300610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35033 (or 35030 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21140300610 its reverse (1600304112), we get a palindrome (22740604722).

The spelling of 21140300610 in words is "twenty-one billion, one hundred forty million, three hundred thousand, six hundred ten".