853091123387 has 4 divisors (see below), whose sum is σ = 854409657456. Its totient is φ = 851772589320.

The previous prime is 853091123383. The next prime is 853091123461. The reversal of 853091123387 is 783321190358.

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 853091123387 - 2² = 853091123383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853091123383) 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, 659266064 + ... + 659267357.

It is an arithmetic number, because the mean of its divisors is an integer number (213602414364).

Almost surely, 2^853091123387 is an apocalyptic number.

853091123387 is a deficient number, since it is larger than the sum of its proper divisors (1318534069).

853091123387 is a wasteful number, since it uses less digits than its factorization.

853091123387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318534068.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 853091123387 in words is "eight hundred fifty-three billion, ninety-one million, one hundred twenty-three thousand, three hundred eighty-seven".