1240802475385 has 16 divisors (see below), whose sum is σ = 1719871667712. Its totient is φ = 849319340800.

The previous prime is 1240802475371. The next prime is 1240802475389. The reversal of 1240802475385 is 5835742080421.

It is not a de Polignac number, because 1240802475385 - 2⁷ = 1240802475257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240802475389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663529801 + ... + 663531670.

It is an arithmetic number, because the mean of its divisors is an integer number (107491979232).

Almost surely, 2^{1240802475385} is an apocalyptic number.

It is an amenable number.

1240802475385 is a deficient number, since it is larger than the sum of its proper divisors (479069192327).

1240802475385 is a wasteful number, since it uses less digits than its factorization.

1240802475385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327061504.

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 1240802475385 in words is "one trillion, two hundred forty billion, eight hundred two million, four hundred seventy-five thousand, three hundred eighty-five".