243454737057 has 32 divisors (see below), whose sum is σ = 384206484480. Its totient is φ = 134167440960.

The previous prime is 243454736989. The next prime is 243454737101. The reversal of 243454737057 is 750737454342.

It is not a de Polignac number, because 243454737057 - 2⁸ = 243454736801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243454732057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311382 + ... + 764112.

It is an arithmetic number, because the mean of its divisors is an integer number (12006452640).

Almost surely, 2^243454737057 is an apocalyptic number.

It is an amenable number.

243454737057 is a deficient number, since it is larger than the sum of its proper divisors (140751747423).

243454737057 is a wasteful number, since it uses less digits than its factorization.

243454737057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453653.

The product of its (nonzero) digits is 9878400, while the sum is 51.

The spelling of 243454737057 in words is "two hundred forty-three billion, four hundred fifty-four million, seven hundred thirty-seven thousand, fifty-seven".