243725906072 has 64 divisors (see below), whose sum is σ = 509274432000. Its totient is φ = 108398183040.

The previous prime is 243725906063. The next prime is 243725906101. The reversal of 243725906072 is 270609527342.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24492554 + ... + 24502502.

It is an arithmetic number, because the mean of its divisors is an integer number (7957413000).

Almost surely, 2^243725906072 is an apocalyptic number.

243725906072 is a gapful number since it is divisible by the number (22) 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 243725906072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254637216000).

243725906072 is an abundant number, since it is smaller than the sum of its proper divisors (265548525928).

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

243725906072 is a wasteful number, since it uses less digits than its factorization.

243725906072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15936 (or 15932 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 243725906072 in words is "two hundred forty-three billion, seven hundred twenty-five million, nine hundred six thousand, seventy-two".