83365590361 has 3 divisors (see below), whose sum is σ = 83365879093. Its totient is φ = 83365301630.

The previous prime is 83365590359. The next prime is 83365590389. The reversal of 83365590361 is 16309556338.

The square root of 83365590361 is 288731.

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 83365590361 - 2¹ = 83365590359 is a prime.

It is a super-2 number, since 2×83365590361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83365590391) 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, 144366 + ... + 433096.

Almost surely, 2^83365590361 is an apocalyptic number.

83365590361 is the 288731-st square number.

83365590361 is the 144366-th centered octagonal number.

It is an amenable number.

83365590361 is a deficient number, since it is larger than the sum of its proper divisors (288732).

83365590361 is an frugal number, since it uses more digits than its factorization.

83365590361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577462 (or 288731 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 49.

Multiplying 83365590361 by its sum of digits (49), we get a square (4084913927689 = 2021117²).

The spelling of 83365590361 in words is "eighty-three billion, three hundred sixty-five million, five hundred ninety thousand, three hundred sixty-one".