21082007310 has 128 divisors (see below), whose sum is σ = 62318398464. Its totient is φ = 4444830720.

The previous prime is 21082007279. The next prime is 21082007347. The reversal of 21082007310 is 1370028012.

It is a super-2 number, since 2×21082007310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6471202 + ... + 6474458.

It is an arithmetic number, because the mean of its divisors is an integer number (486862488).

Almost surely, 2^21082007310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21082007310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31159199232).

21082007310 is an abundant number, since it is smaller than the sum of its proper divisors (41236391154).

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

21082007310 is a wasteful number, since it uses less digits than its factorization.

21082007310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5658.

The product of its (nonzero) digits is 672, while the sum is 24.

The spelling of 21082007310 in words is "twenty-one billion, eighty-two million, seven thousand, three hundred ten".