855469246997 has 2 divisors, whose sum is σ = 855469246998. Its totient is φ = 855469246996.

The previous prime is 855469246967. The next prime is 855469247063. The reversal of 855469246997 is 799642964558.

855469246997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685229661796 + 170239585201 = 827786^2 + 412601^2 .

It is a cyclic number.

It is not a de Polignac number, because 855469246997 - 2²² = 855465052693 is a prime.

It is a super-2 number, since 2×855469246997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855469246927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427734623498 + 427734623499.

It is an arithmetic number, because the mean of its divisors is an integer number (427734623499).

Almost surely, 2^855469246997 is an apocalyptic number.

It is an amenable number.

855469246997 is a deficient number, since it is larger than the sum of its proper divisors (1).

855469246997 is an equidigital number, since it uses as much as digits as its factorization.

855469246997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1175731200, while the sum is 74.

The spelling of 855469246997 in words is "eight hundred fifty-five billion, four hundred sixty-nine million, two hundred forty-six thousand, nine hundred ninety-seven".