426565198081 has 16 divisors (see below), whose sum is σ = 489933259200. Its totient is φ = 367303507200.

The previous prime is 426565198063. The next prime is 426565198099. The reversal of 426565198081 is 180891565624.

It is an interprime number because it is at equal distance from previous prime (426565198063) and next prime (426565198099).

It is a cyclic number.

It is not a de Polignac number, because 426565198081 - 2¹⁷ = 426565067009 is a prime.

It is a super-2 number, since 2×426565198081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426565198001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861085 + ... + 1262773.

It is an arithmetic number, because the mean of its divisors is an integer number (30620828700).

Almost surely, 2^426565198081 is an apocalyptic number.

It is an amenable number.

426565198081 is a deficient number, since it is larger than the sum of its proper divisors (63368061119).

426565198081 is a wasteful number, since it uses less digits than its factorization.

426565198081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406800.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 426565198081 in words is "four hundred twenty-six billion, five hundred sixty-five million, one hundred ninety-eight thousand, eighty-one".