1285782035873 has 8 divisors (see below), whose sum is σ = 1326043665408. Its totient is φ = 1245991302864.

The previous prime is 1285782035861. The next prime is 1285782035921. The reversal of 1285782035873 is 3785302875821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1285782035873 - 2⁶ = 1285782035809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285782035773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117718586 + ... + 117729507.

It is an arithmetic number, because the mean of its divisors is an integer number (165755458176).

Almost surely, 2^{1285782035873} is an apocalyptic number.

It is an amenable number.

1285782035873 is a deficient number, since it is larger than the sum of its proper divisors (40261629535).

1285782035873 is a wasteful number, since it uses less digits than its factorization.

1285782035873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235448263.

The product of its (nonzero) digits is 22579200, while the sum is 59.

The spelling of 1285782035873 in words is "one trillion, two hundred eighty-five billion, seven hundred eighty-two million, thirty-five thousand, eight hundred seventy-three".