426511106521 has 4 divisors (see below), whose sum is σ = 440269529344. Its totient is φ = 412752683700.

The previous prime is 426511106513. The next prime is 426511106551. The reversal of 426511106521 is 125601115624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 426511106521 - 2³ = 426511106513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426511106551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6879211365 + ... + 6879211426.

It is an arithmetic number, because the mean of its divisors is an integer number (110067382336).

Almost surely, 2^426511106521 is an apocalyptic number.

It is an amenable number.

426511106521 is a deficient number, since it is larger than the sum of its proper divisors (13758422823).

426511106521 is a wasteful number, since it uses less digits than its factorization.

426511106521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13758422822.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 426511106521 in words is "four hundred twenty-six billion, five hundred eleven million, one hundred six thousand, five hundred twenty-one".