855120936309 has 8 divisors (see below), whose sum is σ = 1170976417440. Its totient is φ = 554673039696.

The previous prime is 855120936301. The next prime is 855120936337. The reversal of 855120936309 is 903639021558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 855120936309 - 2³ = 855120936301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855120936301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3851895999 + ... + 3851896220.

It is an arithmetic number, because the mean of its divisors is an integer number (146372052180).

Almost surely, 2^855120936309 is an apocalyptic number.

It is an amenable number.

855120936309 is a deficient number, since it is larger than the sum of its proper divisors (315855481131).

855120936309 is a wasteful number, since it uses less digits than its factorization.

855120936309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703792259.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The spelling of 855120936309 in words is "eight hundred fifty-five billion, one hundred twenty million, nine hundred thirty-six thousand, three hundred nine".