1285717392860 has 48 divisors (see below), whose sum is σ = 2707320036960. Its totient is φ = 512895083520.

The previous prime is 1285717392847. The next prime is 1285717392913. The reversal of 1285717392860 is 682937175821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285717392860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18052520 + ... + 18123600.

It is an arithmetic number, because the mean of its divisors is an integer number (56402500770).

Almost surely, 2^{1285717392860} is an apocalyptic number.

1285717392860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285717392860 is an abundant number, since it is smaller than the sum of its proper divisors (1421602644100).

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

1285717392860 is a wasteful number, since it uses less digits than its factorization.

1285717392860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73526 (or 73524 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 1285717392860 in words is "one trillion, two hundred eighty-five billion, seven hundred seventeen million, three hundred ninety-two thousand, eight hundred sixty".