243452156904 has 896 divisors, whose sum is σ = 861249024000. Its totient is φ = 63489484800.

The previous prime is 243452156903. The next prime is 243452156933. The reversal of 243452156904 is 409651254342.

243452156904 is a `hidden beast` number, since 2 + 4 + 34 + 52 + 1 + 569 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 243452156904.

It is not an unprimeable number, because it can be changed into a prime (243452156903) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 642353787 + ... + 642354165.

Almost surely, 2^243452156904 is an apocalyptic number.

243452156904 is a gapful number since it is divisible by the number (24) 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 243452156904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430624512000).

243452156904 is an abundant number, since it is smaller than the sum of its proper divisors (617796867096).

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

243452156904 is a wasteful number, since it uses less digits than its factorization.

243452156904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 243452156904 in words is "two hundred forty-three billion, four hundred fifty-two million, one hundred fifty-six thousand, nine hundred four".