21714731360144 has 40 divisors (see below), whose sum is σ = 44547834303000. Its totient is φ = 10218536173568.

The previous prime is 21714731360131. The next prime is 21714731360159. The reversal of 21714731360144 is 44106313741712.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13413994150144 + 8300737210000 = 3662512^2 + 2881100^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21714731360095 and 21714731360104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17648732 + ... + 18838980.

It is an arithmetic number, because the mean of its divisors is an integer number (1113695857575).

Almost surely, 2^{21714731360144} is an apocalyptic number.

It is an amenable number.

21714731360144 is an abundant number, since it is smaller than the sum of its proper divisors (22833102942856).

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

21714731360144 is a wasteful number, since it uses less digits than its factorization.

21714731360144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257347 (or 1257341 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 21714731360144 in words is "twenty-one trillion, seven hundred fourteen billion, seven hundred thirty-one million, three hundred sixty thousand, one hundred forty-four".