1285928968496 has 40 divisors (see below), whose sum is σ = 2689461658080. Its totient is φ = 593802277376.

The previous prime is 1285928968481. The next prime is 1285928968537. The reversal of 1285928968496 is 6948698295821.

It is a super-2 number, since 2×1285928968496² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60237125 + ... + 60258468.

It is an arithmetic number, because the mean of its divisors is an integer number (67236541452).

Almost surely, 2^{1285928968496} is an apocalyptic number.

1285928968496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1285928968496 is an abundant number, since it is smaller than the sum of its proper divisors (1403532689584).

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

1285928968496 is a wasteful number, since it uses less digits than its factorization.

1285928968496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120495653 (or 120495647 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 77.

The spelling of 1285928968496 in words is "one trillion, two hundred eighty-five billion, nine hundred twenty-eight million, nine hundred sixty-eight thousand, four hundred ninety-six".