1285928427912 has 64 divisors (see below), whose sum is σ = 3302273257920. Its totient is φ = 416986483968.

The previous prime is 1285928427893. The next prime is 1285928427913. The reversal of 1285928427912 is 2197248295821.

It is a super-2 number, since 2×1285928427912² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1285928427913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5195518 + ... + 5437394.

It is an arithmetic number, because the mean of its divisors is an integer number (51598019655).

Almost surely, 2^{1285928427912} is an apocalyptic number.

1285928427912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1285928427912 is an abundant number, since it is smaller than the sum of its proper divisors (2016344830008).

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

1285928427912 is a wasteful number, since it uses less digits than its factorization.

1285928427912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247910 (or 247906 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The spelling of 1285928427912 in words is "one trillion, two hundred eighty-five billion, nine hundred twenty-eight million, four hundred twenty-seven thousand, nine hundred twelve".