243400267494 has 40 divisors (see below), whose sum is σ = 545483401848. Its totient is φ = 81120553920.

The previous prime is 243400267441. The next prime is 243400267501. The reversal of 243400267494 is 494762004342.

243400267494 is a `hidden beast` number, since 2 + 4 + 340 + 0 + 267 + 49 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 934009 + ... + 1165835.

Almost surely, 2^243400267494 is an apocalyptic number.

243400267494 is an abundant number, since it is smaller than the sum of its proper divisors (302083134354).

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

243400267494 is a wasteful number, since it uses less digits than its factorization.

243400267494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238322 (or 238313 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 243400267494 in words is "two hundred forty-three billion, four hundred million, two hundred sixty-seven thousand, four hundred ninety-four".