857530244000 has 96 divisors (see below), whose sum is σ = 2107253440656. Its totient is φ = 342962995200.

The previous prime is 857530243987. The next prime is 857530244023. The reversal of 857530244000 is 442035758.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 65907212176 + 791623031824 = 256724^2 + 889732^2 .

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, 43002032 + ... + 43021968.

Almost surely, 2^857530244000 is an apocalyptic number.

857530244000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

857530244000 is an abundant number, since it is smaller than the sum of its proper divisors (1249723196656).

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

857530244000 is a wasteful number, since it uses less digits than its factorization.

857530244000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30715 (or 30697 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

Adding to 857530244000 its reverse (442035758), we get a palindrome (857972279758).

The spelling of 857530244000 in words is "eight hundred fifty-seven billion, five hundred thirty million, two hundred forty-four thousand".