240553204003553 has 28 divisors (see below), whose sum is σ = 280678370539092. Its totient is φ = 206163990557280.

The previous prime is 240553204003547. The next prime is 240553204003561. The reversal of 240553204003553 is 355300402355042.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58003029504784 + 182550174498769 = 7615972^2 + 13511113^2 .

It is not a de Polignac number, because 240553204003553 - 2¹⁴ = 240553203987169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240553204003553.

It is not an unprimeable number, because it can be changed into a prime (240553204003573) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1028252951 + ... + 1028486867.

Almost surely, 2^{240553204003553} is an apocalyptic number.

It is an amenable number.

240553204003553 is a deficient number, since it is larger than the sum of its proper divisors (40125166535539).

240553204003553 is an frugal number, since it uses more digits than its factorization.

240553204003553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242700 (or 242665 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 41.

Adding to 240553204003553 its reverse (355300402355042), we get a palindrome (595853606358595).

The spelling of 240553204003553 in words is "two hundred forty trillion, five hundred fifty-three billion, two hundred four million, three thousand, five hundred fifty-three".