426552210015521 has 4 divisors (see below), whose sum is σ = 426552294040452. Its totient is φ = 426552125990592.

The previous prime is 426552210015389. The next prime is 426552210015527. The reversal of 426552210015521 is 125510012255624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 315553869434896 + 110998340580625 = 17763836^2 + 10535575^2 .

It is a cyclic number.

It is not a de Polignac number, because 426552210015521 - 2¹⁴ = 426552209999137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426552210015527) 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, 33871940 + ... + 44725973.

It is an arithmetic number, because the mean of its divisors is an integer number (106638073510113).

Almost surely, 2^{426552210015521} is an apocalyptic number.

It is an amenable number.

426552210015521 is a deficient number, since it is larger than the sum of its proper divisors (84024931).

426552210015521 is an equidigital number, since it uses as much as digits as its factorization.

426552210015521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84024930.

The product of its (nonzero) digits is 240000, while the sum is 41.

The spelling of 426552210015521 in words is "four hundred twenty-six trillion, five hundred fifty-two billion, two hundred ten million, fifteen thousand, five hundred twenty-one".