855126719993 has 32 divisors (see below), whose sum is σ = 1086898563072. Its totient is φ = 654466521600.

The previous prime is 855126719981. The next prime is 855126720023. The reversal of 855126719993 is 399917621558.

It is a cyclic number.

It is not a de Polignac number, because 855126719993 - 2⁸ = 855126719737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (855126719933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6368255 + ... + 6501147.

It is an arithmetic number, because the mean of its divisors is an integer number (33965580096).

Almost surely, 2^855126719993 is an apocalyptic number.

It is an amenable number.

855126719993 is a deficient number, since it is larger than the sum of its proper divisors (231771843079).

855126719993 is a wasteful number, since it uses less digits than its factorization.

855126719993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135225.

The product of its digits is 36741600, while the sum is 65.

The spelling of 855126719993 in words is "eight hundred fifty-five billion, one hundred twenty-six million, seven hundred nineteen thousand, nine hundred ninety-three".