240478571693 has 2 divisors, whose sum is σ = 240478571694. Its totient is φ = 240478571692.

The previous prime is 240478571623. The next prime is 240478571731. The reversal of 240478571693 is 396175874042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169008965449 + 71469606244 = 411107^2 + 267338^2 .

It is a cyclic number.

It is not a de Polignac number, because 240478571693 - 2³⁶ = 171759094957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240478571623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120239285846 + 120239285847.

It is an arithmetic number, because the mean of its divisors is an integer number (120239285847).

It is a 1-persistent number, because it is pandigital, but 2⋅240478571693 = 480957143386 is not.

Almost surely, 2^240478571693 is an apocalyptic number.

It is an amenable number.

240478571693 is a deficient number, since it is larger than the sum of its proper divisors (1).

240478571693 is an equidigital number, since it uses as much as digits as its factorization.

240478571693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 240478571693 in words is "two hundred forty billion, four hundred seventy-eight million, five hundred seventy-one thousand, six hundred ninety-three".