521827048361 has 4 divisors (see below), whose sum is σ = 524167080192. Its totient is φ = 519487016532.

The previous prime is 521827048357. The next prime is 521827048381. The reversal of 521827048361 is 163840728125.

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 a cyclic number.

It is not a de Polignac number, because 521827048361 - 2² = 521827048357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521827048331) 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, 1170015581 + ... + 1170016026.

It is an arithmetic number, because the mean of its divisors is an integer number (131041770048).

Almost surely, 2^521827048361 is an apocalyptic number.

It is an amenable number.

521827048361 is a deficient number, since it is larger than the sum of its proper divisors (2340031831).

521827048361 is a wasteful number, since it uses less digits than its factorization.

521827048361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340031830.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 521827048361 in words is "five hundred twenty-one billion, eight hundred twenty-seven million, forty-eight thousand, three hundred sixty-one".