1285079040000 has 1440 divisors, whose sum is σ = 5503241399040. Its totient is φ = 290193408000.

The previous prime is 1285079039977. The next prime is 1285079040023. The reversal of 1285079040000 is 409705821.

1285079040000 is a `hidden beast` number, since 1 + 28 + 507 + 90 + 40 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1285079039977) and next prime (1285079040023).

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15482879959 + ... + 15482880041.

It is an arithmetic number, because the mean of its divisors is an integer number (3821695416).

Almost surely, 2^{1285079040000} is an apocalyptic number.

1285079040000 is a gapful number since it is divisible by the number (10) 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 1285079040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751620699520).

1285079040000 is an abundant number, since it is smaller than the sum of its proper divisors (4218162359040).

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

1285079040000 is an frugal number, since it uses more digits than its factorization.

1285079040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 1285079040000 in words is "one trillion, two hundred eighty-five billion, seventy-nine million, forty thousand".