1285430317038 has 96 divisors (see below), whose sum is σ = 3286291986432. Its totient is φ = 355348728000.

The previous prime is 1285430317021. The next prime is 1285430317049. The reversal of 1285430317038 is 8307130345821.

1285430317038 is a `hidden beast` number, since 1 + 2 + 8 + 543 + 0 + 3 + 1 + 70 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1285430316984 and 1285430317002.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 21738613 + ... + 21797663.

It is an arithmetic number, because the mean of its divisors is an integer number (34232208192).

Almost surely, 2^{1285430317038} is an apocalyptic number.

1285430317038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285430317038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1643145993216).

1285430317038 is an abundant number, since it is smaller than the sum of its proper divisors (2000861669394).

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

1285430317038 is a wasteful number, since it uses less digits than its factorization.

1285430317038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64670 (or 64667 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1285430317038 in words is "one trillion, two hundred eighty-five billion, four hundred thirty million, three hundred seventeen thousand, thirty-eight".