1285717392848 has 160 divisors (see below), whose sum is σ = 3058364252160. Its totient is φ = 511769341440.

The previous prime is 1285717392847. The next prime is 1285717392913. The reversal of 1285717392848 is 8482937175821.

It is a super-2 number, since 2×1285717392848² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285717392847) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16776665 + ... + 16853127.

It is an arithmetic number, because the mean of its divisors is an integer number (19114776576).

Almost surely, 2^{1285717392848} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285717392848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529182126080).

1285717392848 is an abundant number, since it is smaller than the sum of its proper divisors (1772646859312).

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

1285717392848 is a wasteful number, since it uses less digits than its factorization.

1285717392848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76705 (or 76699 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 65.

The spelling of 1285717392848 in words is "one trillion, two hundred eighty-five billion, seven hundred seventeen million, three hundred ninety-two thousand, eight hundred forty-eight".