1285565141504 has 320 divisors, whose sum is σ = 3181762425600. Its totient is φ = 516901109760.

The previous prime is 1285565141431. The next prime is 1285565141527. The reversal of 1285565141504 is 4051415655821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1465866314 + ... + 1465867190.

It is an arithmetic number, because the mean of its divisors is an integer number (9943007580).

Almost surely, 2^{1285565141504} is an apocalyptic number.

1285565141504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285565141504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590881212800).

1285565141504 is an abundant number, since it is smaller than the sum of its proper divisors (1896197284096).

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

1285565141504 is an frugal number, since it uses more digits than its factorization.

1285565141504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 47.

The spelling of 1285565141504 in words is "one trillion, two hundred eighty-five billion, five hundred sixty-five million, one hundred forty-one thousand, five hundred four".