21540100325430 has 32 divisors (see below), whose sum is σ = 51735198104064. Its totient is φ = 5739698162016.

The previous prime is 21540100325347. The next prime is 21540100325467. The reversal of 21540100325430 is 3452300104512.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 270496492 + ... + 270576111.

It is an arithmetic number, because the mean of its divisors is an integer number (1616724940752).

Almost surely, 2^{21540100325430} is an apocalyptic number.

21540100325430 is an abundant number, since it is smaller than the sum of its proper divisors (30195097778634).

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

21540100325430 is a wasteful number, since it uses less digits than its factorization.

21540100325430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541073940.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21540100325430 its reverse (3452300104512), we get a palindrome (24992400429942).

The spelling of 21540100325430 in words is "twenty-one trillion, five hundred forty billion, one hundred million, three hundred twenty-five thousand, four hundred thirty".