82361369621 has 4 divisors (see below), whose sum is σ = 82953897600. Its totient is φ = 81768841644.

The previous prime is 82361369617. The next prime is 82361369653. The reversal of 82361369621 is 12696316328.

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 82361369621 - 2² = 82361369617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82361369611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296263781 + ... + 296264058.

It is an arithmetic number, because the mean of its divisors is an integer number (20738474400).

Almost surely, 2^82361369621 is an apocalyptic number.

It is an amenable number.

82361369621 is a deficient number, since it is larger than the sum of its proper divisors (592527979).

82361369621 is a wasteful number, since it uses less digits than its factorization.

82361369621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592527978.

The product of its digits is 559872, while the sum is 47.

The spelling of 82361369621 in words is "eighty-two billion, three hundred sixty-one million, three hundred sixty-nine thousand, six hundred twenty-one".