21514514445020 has 48 divisors (see below), whose sum is σ = 45210690604800. Its totient is φ = 8600052963840.

The previous prime is 21514514445001. The next prime is 21514514445043. The reversal of 21514514445020 is 2054441541512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247048085 + ... + 247135155.

It is an arithmetic number, because the mean of its divisors is an integer number (941889387600).

Almost surely, 2^{21514514445020} is an apocalyptic number.

21514514445020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21514514445020 is an abundant number, since it is smaller than the sum of its proper divisors (23696176159780).

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

21514514445020 is a wasteful number, since it uses less digits than its factorization.

21514514445020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95198 (or 95196 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 38.

Adding to 21514514445020 its reverse (2054441541512), we get a palindrome (23568955986532).

The spelling of 21514514445020 in words is "twenty-one trillion, five hundred fourteen billion, five hundred fourteen million, four hundred forty-five thousand, twenty".