854457717623 has 4 divisors (see below), whose sum is σ = 868940051880. Its totient is φ = 839975383368.

The previous prime is 854457717601. The next prime is 854457717649. The reversal of 854457717623 is 326717754458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 854457717623 - 2²⁰ = 854456669047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 14482334197 = 854457717623 / (8 + 5 + 4 + 4 + 5 + 7 + 7 + 1 + 7 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854459717623) 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, 7241167040 + ... + 7241167157.

It is an arithmetic number, because the mean of its divisors is an integer number (217235012970).

Almost surely, 2^854457717623 is an apocalyptic number.

854457717623 is a deficient number, since it is larger than the sum of its proper divisors (14482334257).

854457717623 is a wasteful number, since it uses less digits than its factorization.

854457717623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14482334256.

The product of its digits is 39513600, while the sum is 59.

The spelling of 854457717623 in words is "eight hundred fifty-four billion, four hundred fifty-seven million, seven hundred seventeen thousand, six hundred twenty-three".