247721141360 has 640 divisors, whose sum is σ = 762904313856. Its totient is φ = 73180800000.

The previous prime is 247721141351. The next prime is 247721141363. The reversal of 247721141360 is 63141127742.

It is a super-2 number, since 2×247721141360² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247721141363) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1640537285 + ... + 1640537435.

Almost surely, 2^247721141360 is an apocalyptic number.

247721141360 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 247721141360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381452156928).

247721141360 is an abundant number, since it is smaller than the sum of its proper divisors (515183172496).

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

247721141360 is a wasteful number, since it uses less digits than its factorization.

247721141360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 247721141360 in words is "two hundred forty-seven billion, seven hundred twenty-one million, one hundred forty-one thousand, three hundred sixty".