855431999999907 has 8 divisors (see below), whose sum is σ = 1244264727272640. Its totient is φ = 518443636363560.

The previous prime is 855431999999831. The next prime is 855431999999923. The reversal of 855431999999907 is 709999999134558.

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

It is not a de Polignac number, because 855431999999907 - 2²³ = 855431991611299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (855431999999947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12961090909057 + ... + 12961090909122.

It is an arithmetic number, because the mean of its divisors is an integer number (155533090909080).

Almost surely, 2^{855431999999907} is an apocalyptic number.

855431999999907 is a deficient number, since it is larger than the sum of its proper divisors (388832727272733).

855431999999907 is a wasteful number, since it uses less digits than its factorization.

855431999999907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25922181818193.

The product of its (nonzero) digits is 80353879200, while the sum is 96.

The spelling of 855431999999907 in words is "eight hundred fifty-five trillion, four hundred thirty-one billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seven".