243877299120 has 640 divisors, whose sum is σ = 1044613140480. Its totient is φ = 50920980480.

The previous prime is 243877299097. The next prime is 243877299187. The reversal of 243877299120 is 21992778342.

It is a happy number.

It is a super-2 number, since 2×243877299120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19059925 + ... + 19072715.

It is an arithmetic number, because the mean of its divisors is an integer number (1632208032).

Almost surely, 2^243877299120 is an apocalyptic number.

243877299120 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 243877299120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522306570240).

243877299120 is an abundant number, since it is smaller than the sum of its proper divisors (800735841360).

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

243877299120 is a wasteful number, since it uses less digits than its factorization.

243877299120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12930 (or 12918 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 243877299120 in words is "two hundred forty-three billion, eight hundred seventy-seven million, two hundred ninety-nine thousand, one hundred twenty".