1285939248264 has 144 divisors (see below), whose sum is σ = 4036005389520. Its totient is φ = 366756226560.

The previous prime is 1285939248149. The next prime is 1285939248299. The reversal of 1285939248264 is 4628429395821.

1285939248264 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 9 + 3 + 92 + 482 + 64 = 666.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 2580214 + ... + 3037989.

It is an arithmetic number, because the mean of its divisors is an integer number (28027815205).

Almost surely, 2^{1285939248264} is an apocalyptic number.

It is an amenable number.

1285939248264 is an abundant number, since it is smaller than the sum of its proper divisors (2750066141256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285939248264 is a wasteful number, since it uses less digits than its factorization.

1285939248264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618260 (or 5618236 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 1285939248264 in words is "one trillion, two hundred eighty-five billion, nine hundred thirty-nine million, two hundred forty-eight thousand, two hundred sixty-four".