4023978812597 has 4 divisors (see below), whose sum is σ = 4024782167340. Its totient is φ = 4023175457856.

The previous prime is 4023978812591. The next prime is 4023978812761. The reversal of 4023978812597 is 7952188793204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1846462451716 + 2177516360881 = 1358846^2 + 1475641^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023978812597 - 2¹⁴ = 4023978796213 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 (4023978812591) 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, 401669858 + ... + 401679875.

It is an arithmetic number, because the mean of its divisors is an integer number (1006195541835).

Almost surely, 2^{4023978812597} is an apocalyptic number.

It is an amenable number.

4023978812597 is a deficient number, since it is larger than the sum of its proper divisors (803354743).

4023978812597 is an equidigital number, since it uses as much as digits as its factorization.

4023978812597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803354742.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 4023978812597 in words is "four trillion, twenty-three billion, nine hundred seventy-eight million, eight hundred twelve thousand, five hundred ninety-seven".