857265606493 has 4 divisors (see below), whose sum is σ = 902384848960. Its totient is φ = 812146364028.

The previous prime is 857265606419. The next prime is 857265606521. The reversal of 857265606493 is 394606562758.

857265606493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 857265606493 - 2²¹ = 857263509341 is a prime.

It is a super-2 number, since 2×857265606493² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857265606403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22559621205 + ... + 22559621242.

It is an arithmetic number, because the mean of its divisors is an integer number (225596212240).

Almost surely, 2^857265606493 is an apocalyptic number.

It is an amenable number.

857265606493 is a deficient number, since it is larger than the sum of its proper divisors (45119242467).

857265606493 is a wasteful number, since it uses less digits than its factorization.

857265606493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45119242466.

The product of its (nonzero) digits is 65318400, while the sum is 61.

The spelling of 857265606493 in words is "eight hundred fifty-seven billion, two hundred sixty-five million, six hundred six thousand, four hundred ninety-three".