240551244554221 has 4 divisors (see below), whose sum is σ = 251009994317472. Its totient is φ = 230092494790972.

The previous prime is 240551244554209. The next prime is 240551244554239. The reversal of 240551244554221 is 122455442155042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240551244554221 - 2⁵ = 240551244554189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240551244558221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5229374881591 + ... + 5229374881636.

It is an arithmetic number, because the mean of its divisors is an integer number (62752498579368).

Almost surely, 2^{240551244554221} is an apocalyptic number.

It is an amenable number.

240551244554221 is a deficient number, since it is larger than the sum of its proper divisors (10458749763251).

240551244554221 is a wasteful number, since it uses less digits than its factorization.

240551244554221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10458749763250.

The product of its (nonzero) digits is 2560000, while the sum is 46.

The spelling of 240551244554221 in words is "two hundred forty trillion, five hundred fifty-one billion, two hundred forty-four million, five hundred fifty-four thousand, two hundred twenty-one".