243400251153 has 16 divisors (see below), whose sum is σ = 327076626240. Its totient is φ = 160996617216.

The previous prime is 243400251139. The next prime is 243400251167. The reversal of 243400251153 is 351152004342.

It is an interprime number because it is at equal distance from previous prime (243400251139) and next prime (243400251167).

It is not a de Polignac number, because 243400251153 - 2⁴ = 243400251137 is a prime.

It is a super-2 number, since 2×243400251153² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243400251153.

It is not an unprimeable number, because it can be changed into a prime (243400241153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619626 + ... + 933132.

It is an arithmetic number, because the mean of its divisors is an integer number (20442289140).

Almost surely, 2^243400251153 is an apocalyptic number.

It is an amenable number.

243400251153 is a deficient number, since it is larger than the sum of its proper divisors (83676375087).

243400251153 is a wasteful number, since it uses less digits than its factorization.

243400251153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315536.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 243400251153 its reverse (351152004342), we get a palindrome (594552255495).

The spelling of 243400251153 in words is "two hundred forty-three billion, four hundred million, two hundred fifty-one thousand, one hundred fifty-three".