240631356456641 has 4 divisors (see below), whose sum is σ = 240707337311232. Its totient is φ = 240555375602052.

The previous prime is 240631356456629. The next prime is 240631356456727. The reversal of 240631356456641 is 146654653136042.

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 240631356456641 - 2⁶ = 240631356456577 is a prime.

It is a super-3 number, since 3×240631356456641³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240631356356641) 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, 37990422545 + ... + 37990428878.

It is an arithmetic number, because the mean of its divisors is an integer number (60176834327808).

Almost surely, 2^{240631356456641} is an apocalyptic number.

It is an amenable number.

240631356456641 is a deficient number, since it is larger than the sum of its proper divisors (75980854591).

240631356456641 is an equidigital number, since it uses as much as digits as its factorization.

240631356456641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75980854590.

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 240631356456641 in words is "two hundred forty trillion, six hundred thirty-one billion, three hundred fifty-six million, four hundred fifty-six thousand, six hundred forty-one".