40578752742257 has 4 divisors (see below), whose sum is σ = 40653759679476. Its totient is φ = 40503745805040.

The previous prime is 40578752742223. The next prime is 40578752742263. The reversal of 40578752742257 is 75224725787504.

It is a happy number.

40578752742257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15516674252641 + 25062078489616 = 3939121^2 + 5006204^2 .

It is a cyclic number.

It is not a de Polignac number, because 40578752742257 - 2⁸ = 40578752742001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40578752742193 and 40578752742202.

It is not an unprimeable number, because it can be changed into a prime (40578752742557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37503467798 + ... + 37503468879.

It is an arithmetic number, because the mean of its divisors is an integer number (10163439919869).

Almost surely, 2^{40578752742257} is an apocalyptic number.

It is an amenable number.

40578752742257 is a deficient number, since it is larger than the sum of its proper divisors (75006937219).

40578752742257 is an equidigital number, since it uses as much as digits as its factorization.

40578752742257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75006937218.

The product of its (nonzero) digits is 307328000, while the sum is 65.

The spelling of 40578752742257 in words is "forty trillion, five hundred seventy-eight billion, seven hundred fifty-two million, seven hundred forty-two thousand, two hundred fifty-seven".