243253351454040 has 96 divisors (see below), whose sum is σ = 790645914695520. Its totient is φ = 64861609826304.

The previous prime is 243253351453991. The next prime is 243253351454041. The reversal of 243253351454040 is 40454153352342.

243253351454040 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 53 + 3 + 5 + 14 + 540 + 40 = 666.

It is a super-4 number, since 4×243253351454040⁴ (a number of 59 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243253351454041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27061977 + ... + 34912136.

It is an arithmetic number, because the mean of its divisors is an integer number (8235894944745).

Almost surely, 2^{243253351454040} is an apocalyptic number.

243253351454040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243253351454040 is an abundant number, since it is smaller than the sum of its proper divisors (547392563241480).

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

243253351454040 is a wasteful number, since it uses less digits than its factorization.

243253351454040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61985033 (or 61985026 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 45.

The spelling of 243253351454040 in words is "two hundred forty-three trillion, two hundred fifty-three billion, three hundred fifty-one million, four hundred fifty-four thousand, forty".