857432918513 has 16 divisors (see below), whose sum is σ = 870102466560. Its totient is φ = 844810746000.

The previous prime is 857432918497. The next prime is 857432918519. The reversal of 857432918513 is 315819234758.

It is a cyclic number.

It is not a de Polignac number, because 857432918513 - 2⁴ = 857432918497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857432918519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80648708 + ... + 80659338.

It is an arithmetic number, because the mean of its divisors is an integer number (54381404160).

Almost surely, 2^857432918513 is an apocalyptic number.

It is an amenable number.

857432918513 is a deficient number, since it is larger than the sum of its proper divisors (12669548047).

857432918513 is a wasteful number, since it uses less digits than its factorization.

857432918513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12748.

The product of its digits is 7257600, while the sum is 56.

The spelling of 857432918513 in words is "eight hundred fifty-seven billion, four hundred thirty-two million, nine hundred eighteen thousand, five hundred thirteen".