240271320412661 has 16 divisors (see below), whose sum is σ = 240615455094000. Its totient is φ = 239927454294528.

The previous prime is 240271320412631. The next prime is 240271320412733. The reversal of 240271320412661 is 166214023172042.

It can be written as a sum of positive squares in 8 ways, for example, as 212072406042436 + 28198914370225 = 14562706^2 + 5310265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240271320412661 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 (240271320412631) 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, 26611062095 + ... + 26611071123.

It is an arithmetic number, because the mean of its divisors is an integer number (15038465943375).

Almost surely, 2^{240271320412661} is an apocalyptic number.

It is an amenable number.

240271320412661 is a deficient number, since it is larger than the sum of its proper divisors (344134681339).

240271320412661 is a wasteful number, since it uses less digits than its factorization.

240271320412661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20008.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 240271320412661 in words is "two hundred forty trillion, two hundred seventy-one billion, three hundred twenty million, four hundred twelve thousand, six hundred sixty-one".