532011863821 has 4 divisors (see below), whose sum is σ = 532021759200. Its totient is φ = 532001968444.

The previous prime is 532011863741. The next prime is 532011863863. The reversal of 532011863821 is 128368110235.

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, and also an emirpimes, since its reverse is a distinct semiprime: 128368110235 = 5 ⋅25673622047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-532011863821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532011863321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4866601 + ... + 4974718.

It is an arithmetic number, because the mean of its divisors is an integer number (133005439800).

Almost surely, 2^532011863821 is an apocalyptic number.

It is an amenable number.

532011863821 is a deficient number, since it is larger than the sum of its proper divisors (9895379).

532011863821 is an equidigital number, since it uses as much as digits as its factorization.

532011863821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895378.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 532011863821 in words is "five hundred thirty-two billion, eleven million, eight hundred sixty-three thousand, eight hundred twenty-one".