2400252117665 has 8 divisors (see below), whose sum is σ = 2934647872488. Its totient is φ = 1883971473280.

The previous prime is 2400252117661. The next prime is 2400252117673. The reversal of 2400252117665 is 5667112520042.

It can be written as a sum of positive squares in 4 ways, for example, as 1097985431104 + 1302266686561 = 1047848^2 + 1141169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2400252117665 - 2² = 2400252117661 is a prime.

It is a super-2 number, since 2×2400252117665² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400252117661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4528777316 + ... + 4528777845.

It is an arithmetic number, because the mean of its divisors is an integer number (366830984061).

Almost surely, 2^{2400252117665} is an apocalyptic number.

It is an amenable number.

2400252117665 is a deficient number, since it is larger than the sum of its proper divisors (534395754823).

2400252117665 is an equidigital number, since it uses as much as digits as its factorization.

2400252117665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9057555219.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 2400252117665 in words is "two trillion, four hundred billion, two hundred fifty-two million, one hundred seventeen thousand, six hundred sixty-five".