830238087521 has 4 divisors (see below), whose sum is σ = 857019961344. Its totient is φ = 803456213700.

The previous prime is 830238087499. The next prime is 830238087533. The reversal of 830238087521 is 125780832038.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-830238087521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (830238087121) 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, 13390936865 + ... + 13390936926.

It is an arithmetic number, because the mean of its divisors is an integer number (214254990336).

Almost surely, 2^830238087521 is an apocalyptic number.

It is an amenable number.

830238087521 is a deficient number, since it is larger than the sum of its proper divisors (26781873823).

830238087521 is a wasteful number, since it uses less digits than its factorization.

830238087521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26781873822.

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

The spelling of 830238087521 in words is "eight hundred thirty billion, two hundred thirty-eight million, eighty-seven thousand, five hundred twenty-one".