426868553663 has 4 divisors (see below), whose sum is σ = 427965902520. Its totient is φ = 425771204808.

The previous prime is 426868553621. The next prime is 426868553689. The reversal of 426868553663 is 366355868624.

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 426868553663 - 2¹⁴ = 426868537279 is a prime.

It is a super-3 number, since 3×426868553663³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 426868553596 and 426868553605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426868550663) 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, 548673845 + ... + 548674622.

It is an arithmetic number, because the mean of its divisors is an integer number (106991475630).

Almost surely, 2^426868553663 is an apocalyptic number.

426868553663 is a deficient number, since it is larger than the sum of its proper divisors (1097348857).

426868553663 is a wasteful number, since it uses less digits than its factorization.

426868553663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097348856.

The product of its digits is 149299200, while the sum is 62.

The spelling of 426868553663 in words is "four hundred twenty-six billion, eight hundred sixty-eight million, five hundred fifty-three thousand, six hundred sixty-three".