21530432045510 has 16 divisors (see below), whose sum is σ = 39138488353872. Its totient is φ = 8526903780000.

The previous prime is 21530432045503. The next prime is 21530432045561. The reversal of 21530432045510 is 1554023403512.

It is a super-2 number, since 2×21530432045510² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10658628716 + ... + 10658630735.

It is an arithmetic number, because the mean of its divisors is an integer number (2446155522117).

Almost surely, 2^{21530432045510} is an apocalyptic number.

21530432045510 is a deficient number, since it is larger than the sum of its proper divisors (17608056308362).

21530432045510 is a wasteful number, since it uses less digits than its factorization.

21530432045510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21317259559.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 21530432045510 in words is "twenty-one trillion, five hundred thirty billion, four hundred thirty-two million, forty-five thousand, five hundred ten".