1284960275388 has 72 divisors (see below), whose sum is σ = 3278629885440. Its totient is φ = 424303608960.

The previous prime is 1284960275351. The next prime is 1284960275399. The reversal of 1284960275388 is 8835720694821.

1284960275388 is a `hidden beast` number, since 1 + 2 + 8 + 4 + 96 + 0 + 2 + 7 + 538 + 8 = 666.

It is a super-2 number, since 2×1284960275388² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2809498 + ... + 3234686.

It is a 1-persistent number, because it is pandigital, but 2⋅1284960275388 = 2569920550776 is not.

Almost surely, 2^{1284960275388} is an apocalyptic number.

1284960275388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1284960275388 is an abundant number, since it is smaller than the sum of its proper divisors (1993669610052).

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

1284960275388 is a wasteful number, since it uses less digits than its factorization.

1284960275388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425987 (or 425982 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 1284960275388 in words is "one trillion, two hundred eighty-four billion, nine hundred sixty million, two hundred seventy-five thousand, three hundred eighty-eight".