240552261209 has 6 divisors (see below), whose sum is σ = 260479667646. Its totient is φ = 222048240960.

The previous prime is 240552261181. The next prime is 240552261239. The reversal of 240552261209 is 902162255042.

It can be written as a sum of positive squares in 3 ways, for example, as 63043600 + 240489217609 = 7940^2 + 490397^2 .

It is not a de Polignac number, because 240552261209 - 2²⁰ = 240551212633 is a prime.

It is a super-2 number, since 2×240552261209² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240552261239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711692912 + ... + 711693249.

It is an arithmetic number, because the mean of its divisors is an integer number (43413277941).

Almost surely, 2^240552261209 is an apocalyptic number.

It is an amenable number.

240552261209 is a deficient number, since it is larger than the sum of its proper divisors (19927406437).

240552261209 is a wasteful number, since it uses less digits than its factorization.

240552261209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423386187 (or 1423386174 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 240552261209 in words is "two hundred forty billion, five hundred fifty-two million, two hundred sixty-one thousand, two hundred nine".