855331965431 has 4 divisors (see below), whose sum is σ = 855360296352. Its totient is φ = 855303634512.

The previous prime is 855331965427. The next prime is 855331965437. The reversal of 855331965431 is 134569133558.

It is a happy number.

855331965431 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.

It is a cyclic number.

It is not a de Polignac number, because 855331965431 - 2² = 855331965427 is a prime.

It is a super-2 number, since 2×855331965431² (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 (855331965437) 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, 14120126 + ... + 14180571.

It is an arithmetic number, because the mean of its divisors is an integer number (213840074088).

Almost surely, 2^855331965431 is an apocalyptic number.

855331965431 is a deficient number, since it is larger than the sum of its proper divisors (28330921).

855331965431 is a wasteful number, since it uses less digits than its factorization.

855331965431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28330920.

The product of its digits is 5832000, while the sum is 53.

The spelling of 855331965431 in words is "eight hundred fifty-five billion, three hundred thirty-one million, nine hundred sixty-five thousand, four hundred thirty-one".