21464312358480 has 80 divisors (see below), whose sum is σ = 66817775888640. Its totient is φ = 5699867590144.

The previous prime is 21464312358469. The next prime is 21464312358481. The reversal of 21464312358480 is 8485321346412.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21464312358481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187044387 + ... + 187159106.

It is an arithmetic number, because the mean of its divisors is an integer number (835222198608).

Almost surely, 2^{21464312358480} is an apocalyptic number.

21464312358480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21464312358480 is an abundant number, since it is smaller than the sum of its proper divisors (45353463530160).

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

21464312358480 is a wasteful number, since it uses less digits than its factorization.

21464312358480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374203748 (or 374203742 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 51.

The spelling of 21464312358480 in words is "twenty-one trillion, four hundred sixty-four billion, three hundred twelve million, three hundred fifty-eight thousand, four hundred eighty".