1585550868500 has 48 divisors (see below), whose sum is σ = 3471884881920. Its totient is φ = 632564343200.

The previous prime is 1585550868493. The next prime is 1585550868557. The reversal of 1585550868500 is 58680555851.

It is a super-2 number, since 2×1585550868500² (a number of 25 digits) contains 22 as substring.

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, 3948320 + ... + 4331319.

It is an arithmetic number, because the mean of its divisors is an integer number (72330935040).

Almost surely, 2^{1585550868500} is an apocalyptic number.

1585550868500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1585550868500 is an abundant number, since it is smaller than the sum of its proper divisors (1886334013420).

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

1585550868500 is a wasteful number, since it uses less digits than its factorization.

1585550868500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280041 (or 8280029 counting only the distinct ones).

The product of its (nonzero) digits is 9600000, while the sum is 56.

The spelling of 1585550868500 in words is "one trillion, five hundred eighty-five billion, five hundred fifty million, eight hundred sixty-eight thousand, five hundred".