83563128016369 has 3 divisors (see below), whose sum is σ = 83563137157657. Its totient is φ = 83563118875082.

The previous prime is 83563128016363. The next prime is 83563128016393. The reversal of 83563128016369 is 96361082136538.

The square root of 83563128016369 is 9141287.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 83563128016369 - 2²³ = 83563119627761 is a prime.

It is a super-2 number, since 2×83563128016369² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83563128016363) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4570644 + ... + 13711930.

Almost surely, 2^{83563128016369} is an apocalyptic number.

83563128016369 is the 9141287-th square number.

83563128016369 is the 4570644-th centered octagonal number.

It is an amenable number.

83563128016369 is a deficient number, since it is larger than the sum of its proper divisors (9141288).

83563128016369 is an frugal number, since it uses more digits than its factorization.

83563128016369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18282574 (or 9141287 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 83563128016369 in words is "eighty-three trillion, five hundred sixty-three billion, one hundred twenty-eight million, sixteen thousand, three hundred sixty-nine".