21473659393120 has 48 divisors (see below), whose sum is σ = 55343476713168. Its totient is φ = 7808603415040.

The previous prime is 21473659393117. The next prime is 21473659393129. The reversal of 21473659393120 is 2139395637412.

It is a super-2 number, since 2×21473659393120² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21473659393129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6100469659 + ... + 6100473178.

It is an arithmetic number, because the mean of its divisors is an integer number (1152989098191).

Almost surely, 2^{21473659393120} is an apocalyptic number.

21473659393120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21473659393120 is an abundant number, since it is smaller than the sum of its proper divisors (33869817320048).

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

21473659393120 is a wasteful number, since it uses less digits than its factorization.

21473659393120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12200942863 (or 12200942855 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 55.

The spelling of 21473659393120 in words is "twenty-one trillion, four hundred seventy-three billion, six hundred fifty-nine million, three hundred ninety-three thousand, one hundred twenty".