247720220000 has 240 divisors, whose sum is σ = 668612088144. Its totient is φ = 89568000000.

The previous prime is 247720219961. The next prime is 247720220017. The reversal of 247720220000 is 22027742.

It is a happy number.

It is a super-2 number, since 2×247720220000² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39816890 + ... + 39823110.

Almost surely, 2^247720220000 is an apocalyptic number.

247720220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247720220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334306044072).

247720220000 is an abundant number, since it is smaller than the sum of its proper divisors (420891868144).

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

247720220000 is a wasteful number, since it uses less digits than its factorization.

247720220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443 (or 6420 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

Adding to 247720220000 its reverse (22027742), we get a palindrome (247742247742).

The spelling of 247720220000 in words is "two hundred forty-seven billion, seven hundred twenty million, two hundred twenty thousand".